@ChocolateBar999:
And then perceedes to do nothing through the duration of it (we don't even see how he failed).
Which gets made up later by having a fight with Deku after the License Exam, admitting that he feels guilty over All-Might losing his Quirk, learns the truth about Deku's Quirk, and finally shows some respect for Deku in nuanced ways.
Also, do you remember any memorable moments from Iida during the License arc? I sure don't.
And? Even GT knows that info is he a major character now?
It was still a major moment for Bakugo that got occasionally built up throughout the series since the Battle Trial arc. That's like saying Iida being present for the fight against Stain and rescuing Bakugo doesn't matter because there were other allies with him during those events. And it's bound to play a role in the future.
No he didn't in fact he doesn't get any focus during that arc either other than being a comic relief.
All of the students provided loads of comic relief that arc. He debated with his classmates about his parenting style of using violence to keep the kids in check, contributed advice about how the kids would feel insecure if they were looked down upon by their opponent, kept interacting with the leader of the kids and figured out that the children had to be following the example of a popular kid from his own experiences, which culminated into telling the kids' leader that it's more important to recognize your own weaknesses than to look down on others. That final moment reflected his own character arc growth.
He didn't get focused in this arc either
Uh, yes he did. He wast one of the main central characters of the arc (that would be Deku, Gentle, La Brava, Jirou, and sort of Eri), but he shined among the supporting cast. He got somewhat more focus than Iida did by criticizing everyone about their intentions with the Culture Festival, followed that up by motivating them to the best they can do to wow the other department students and upperclassmen, got selected as the drummer, and a recurring gag about obliterating the audience with his music playing.
What did Iida even do this arc that was memorable? He only did his already-existent job as class president and gave a couple throwaway lines about how Class 1-A must keep striving to do better. There were zero major profound moments centered around him.
I asked the exact same thing with Bakugou and all you have done is failed to explain your point. So all you've proven is that Bakugou gets a lot of lipservice and nothing more.
Bakugo has gotten plenty more than lip service. Iida has faded much more intro the background into the Kamino event and a lot of his moments nowadays feel a lot more like Horikoshi reminded us he exists rather than still feeling significant to the story or having an existent character arc. I dare say that Uraraka has gotten more focus than Iida post-Kamino and she has only gotten background ally support and breadcrumbs of internal focus on her insecurities once in a blue moon.
And still nothing to prove otherwise.
There is plenty to prove.
Your argument would make more sense if Rock Lee wasn't sidelined through the majority of the series.
As someone who is a big fan of Iida's character, I've been feeling like he's gotten sidelined a lot compared to Bakugo and Shouto still being major players and getting character development. I hope that Horikoshi still has plans for him and didn't only think of a cliche revengeance obsession for him.
He had a moment during the Eight Cleansers arc where he asked Deku if anything was wrong and how friends shouldn't keep secrets. That was meant to parallel how in the Field Training arc Iida lied to Deku about being fine when he was really going to avenge his brother. But it didn't pay off at all because Deku still solved the problem himself and Iida is still none the wiser. Maybe this could be another subtle gradual plotline where Iida will eventually confront Deku about a big secret in a future arc, but Iida barely contributed anything to that arc.
The only other "significant" moment Iida has had is indirectly inspiring Deku to invent Shoot Style during the License arc. And that only happened from a gag about Iida not getting the gadget he wanted, prompting Hatsume to eccentrically talk about how he could use his arms to run instead of his legs during post-Recipro Burst burnout periods.
All in all, Iida's barely done much for the past 80 chapters and I hope he shines again soon. I'm fine with taking the focus off of him for a few arcs since he was the centerpiece in the Field Training arc and got to shine as an antithesis to Deku during the Kamino event. But now I'm just starting to reach the point where I feel like he's getting a little too neglected.