The upshot of the movement was that after the blip, people moved across borders willingly and not so much willingly. After the blip thing were in a bad state and people united ignoring borders it seems to be able to get things going and move on, etc. As a result, abandoned homes were used by refugees (for lack of a better word) and things achieved a normal in that 5 year span. As we all know, things changed big time in those 5 years. Once the blip was undone, you had 3 billion people show up and basically reek havoc on the system. People were living in their houses, doing their jobs, etc. In many cases they implied those people made advancements in their way of life, got out of poverty, etc.
The GRC in this series was voting internationally it seems, to force everyone who didn't get blipped out to give up their new homes and in many cases new countries, friends, families, etc to go back to where they were pre-blip. Basically telling those who didn't get blipped out their last 5 years were irrelevant and meant nothing and they had to give up everything they achieved in that timeframe all so that those were just returned could return to what they new without any issue. The GRC seemingly was made up of the wealthy, and/or pre-blip elite, and those who who have just returned and no one who they were now displacing with their vote. The Flagsmashers were protesting a return to the pre-blip status quo and the manner in which it was being done.
I will agree that they could have done a bit more to make this clear. Karli was right in theory, but villainous in methodology. It's quite possible editing out the virus aspect had a big impact on this aspect.
This is the third post endgame installment we've had from Marvel and this is this first time the actual un-blip was addressed. Spiderman treated it as no big deal really, WandaVision i don't recall mentioning it, and now this. This would be the reality. Perhaps the virus version takes it head on more, i don't know. But to me, that'd be the only issue with this. Other than that, it was excellent.
See, I read it a little differently, but maybe I misunderstood.
My take was that the GRC was kinda like the U.N. During the 5 years, countries had adapted to losing half their population, and it's possible that borders shifted. Then all of a sudden, 3B people pop back into existence, and they need somewhere to go, jobs to do, food to eat, etc., but the entire world's infrastructure had been adjusted for an existence without those people. So, their sudden appearance necessarily upset the balance that had been set up, and many of those people who came back were in refugee camps, without places to go, or at least to where the GRC was still gradually trying to figure out where they should go, but moving slowly. Towards that end, they'd do things like shift borders to make space for the new people, etc.
Sam's speech at the end was more about how the folks at the top were too concerned with maintaining their own comfort, status quo, and power, and were unwilling to use their power to really help the people who needed it.
The Flag Smashers (adapted from a really,
really goofy "supervillain" who just was kind of an anti-UN) wanted to abolish the GRC and world governments, and would commit violence to do it. Their methods grew from disruptive to lethal, and in doing so, became inexcusable, but Sam's point was that they came from a real place and real need that the governments of the world were unwilling to meet. A big part of his argument to the Senator was that without people in the room who had a different perspective -- like those of the refugees -- it was too easy to ignore their real needs and focus on the needs of the powerful to retain their power.
As I understand it, this is drawn from the comics where Sam operates as Captain America (and before Steve comes back to take the shield again, because he always does). He's apparently a much more...hmm....disruptive Captain America who really stands up for the powerless, rather than being a protector of the U.S. government (and thus, the powerful). I'm really looking forward to where this goes, and I think it's awesome that Sam's the new Cap. Walker being USAgent was pretty much what I expected. Not sure what they'll do with Bucky, though. In the comics, he, too, operates as Cap for a bit. Dunno what he does after that, though. I haven't really looked into it.