Hún segir að það verði auðveldara að skrifa lengri texta þegar við þorum að nota ný orð oftar.

No. They are two different uses of the same word:

• segir að ... = says that ...
  Here að is a conjunction introducing a subordinate clause.

• að skrifa / að nota = to write / to use
  Here að is the infinitive marker, like English to before a verb.

So in this sentence:

• Hún segir að ... = She says that ...
• auðveldara að skrifa = easier to write
• þorum að nota = dare to use

Verði is the present subjunctive of verða.

A native English speaker often notices this because they expect the normal present form verður. In Icelandic, the subjunctive is often used in subordinate clauses after verbs of saying, thinking, hoping, etc., especially in more formal or careful language, and especially when the statement is not presented as a plain fact.

So:

• verður = indicative
• verði = subjunctive

In this sentence, Hún segir að það verði auðveldara ... has the feel of reported speech or a stated expectation: She says that it will be / become easier ...

You may also hear verður in everyday speech in similar contexts, but verði is very natural and grammatically important to recognize.

Icelandic does not have a separate future tense in the way English does. It often uses present forms, plus context, to express future meaning.

So það verði auðveldara can be understood as:

• it will be easier
• it becomes easier
• it will become easier

The future meaning comes from the context, not from a special future verb ending.

That is very normal in Icelandic.

Here það is a dummy subject or expletive subject, much like English it in sentences such as:

• It is easy to read
• It is fun to learn

In the Icelandic sentence, það does not refer to a specific thing. It just fills the subject position:

• það verði auðveldara að skrifa lengri texta

Literally, this is like:

• it will be easier to write longer texts

So the real content is the infinitive phrase að skrifa lengri texta, but það appears as the grammatical subject.

Because Icelandic commonly uses neuter singular in impersonal statements like this, especially with dummy það and with an infinitive phrase.

So:

• auðveldara = neuter singular comparative of auðveldur (easy)

This matches the construction:

• það verði auðveldara að ... = it will be easier to ...

You can think of it as agreeing with the whole idea expressed by að skrifa lengri texta, not with a masculine or feminine noun.

Texta is in the accusative, because it is the direct object of skrifa (to write).

• að skrifa texta = to write a text / to write texts

The adjective lengri also matches that object phrase:

• lengri texta = longer text / longer texts

A useful detail: in this phrase, the forms can look the same for singular and plural. So lengri texta is one of those places where context tells you the number. In this sentence, the intended meaning is longer texts.

Because langur (long) has an irregular comparative:

• langur = long
• lengri = longer
• lengstur = longest

So:

• lengri texta = longer texts

This is just something to learn as a comparison pattern. Not all Icelandic comparatives are formed in exactly the same way.

Þorum is the 1st person plural present of þora, which means to dare.

So:

• ég þori = I dare
• við þorum = we dare

In the sentence:

• þegar við þorum að nota ný orð oftar
• when we dare to use new words more often

So við is the subject, and þorum is the finite verb.

Because ný orð is an indefinite noun phrase, and Icelandic normally uses the strong adjective form in that situation.

• ný orð = new words

The form nýja is the weak form, which is commonly used when the noun is definite or otherwise specifically identified, for example with the, a demonstrative, or certain other determiners.

So a learner-friendly contrast is:

• ný orð = new words
• nýju orðin = the new words

That is why ný orð is correct here.

Oftar means more often. It is the comparative form of the adverb oft (often).

So:

• oft = often
• oftar = more often
• oftast = most often

In the sentence:

• að nota ný orð oftar = to use new words more often

It modifies the verb nota and tells you about frequency.

Because þegar introduces a subordinate clause, and subordinate clauses usually have more straightforward subject-verb order.

So:

• þegar við þorum ... = when we dare ...

In main clauses, Icelandic often shows verb-second word order, but subordinate clauses introduced by words like að, þegar, ef, þótt, etc. do not behave the same way.

That is why við comes before þorum here.

It can feel like either, depending on how naturally you translate it into English.

• það verði auðveldara can be understood as it will be easier
• but also as it will become easier

With comparative adjectives like auðveldara (easier), verða often has a become flavor, because it suggests a change into a new state.

So both ideas are close here, and English may choose whichever sounds more natural in context.