Or is that not important??
Everything mentioned in Quran is important. Nothing in it is trivial. This is why I really think Satan is making a mockery out of you guys when you take verses and try to diminish them to trivial meanings and deny their significance.
The two places Elyas is mentioned are key insights to Quran and prove it's subtle eloquent majesty (among many other proofs there are in Quran regarding it being from God).
You have to recall:
1. The verses about witnesses.
2. Isa's statement about how long he was a witness.
3.The verses about reason of 1. God revealing books 2. God sending Messengers. 3. God sending Prophets (Who may or may not be MEssengers). 4. The verses about leadership, authority, and guidance (Imammate) aspect of the Prophets leadership. 5. The context of Ulil-Amr. 6. The divinely chosen families and the family of Mohammad. 7 The Ghadeer event while reading Suratal Maeeda (5th Surah) and then reading verse 5:12 and other verses about Twelve.
When you realize Bani-Israel, and all nations before them, who had founding Messengers all had chosen divine families with one Founder and 12 Successors,
When you realize there is a Guide and witness for all people.
When you realize who the witnesses are and the many verses about witnesses.
When you remember the verses about "sign" in context of miracles, and the responses, and the talk of "Ghayb" and guidance, then everything becomes clear.
Elyas is significant in where he is mentioned.
The same is true for example even about the very sculptures Sulaiman made. Quran would not reminded of the sculptures if they were insignificant.
It's pointing to what points to the true way of God in the corrupted texts of the Israelites.
Talut is mentioned because that had to be corrected, and the issue of leadership, chosen family of Moses and Aeron, etc, all had to be manifested.
This is not something you trivialize. IF we argue for Ahlulbayt without all the proof with regard to the past, then, it's belittling the verses of Quran that remind of the past.
So it does matter.
Does every Shia to be Shia have to know this about Elyas. No.
But they should constantly seek knowledge and when knowledge is shown to them, not deny it.