Han shot first.
No, Greedo shot first.
No, Han shot first.
No, they shot at the same time.
WHO CARES. IT's BEEN 20 YEARS. GET OVER IT.
Han shot first, but the point was never about who shot first or even the shooting at all. That was just a vehicle for the larger conversation about changes to the movies, story, and Star Wars as a whole. Han shooting first itells us about his character, it tells you the type of person he is, and it does it in a way that isn't just spelling it out for you. Han doesn't flatly state to Greedo that he'll do anything that it takes to get what he wants or some such. No, he distracts Greedo, pulls out his gun, and then shoots the Bounty Hunter dead. We as the audience are left to take from that scene what type of man Han is, and that informs his character to the audience from that point forward. Yes, I think it's a good scene that didn't need changing, and yes I think changing things can be disrespectful. However, that isn't the point. Han waiting to shoot changes what the audience takes from the scene, it changes the character and that fractures out to a lot of other changes with varying degrees of impact.
That is the conversation. George Lucas' systematic disregard for how such changes effect the characters and Star Wars at large. Or more to the point, George Lucas is a sloppy writer and the more he writes the more that is apparent. Every little small thing he feels the need to edit, to move around, to mother add nothing at best, and ruins at worst. And that's what it is like, having a mother in law at dinner who keeps coming in and adding salt and seasoning to everything. She isn't even bothering to taste while she does it, she just wants everything to be "her way" and in the end the meal is ruined.
That's why people are angry, that's why people argue. Because he couldn't help himself and refused to listen to the advice of others, and because of that something good was made worse.
As for Marvel's shakeups. I like a shared universe. I like that the stories impact one another. I hate the constant shakeups, the reboots, the retcons, the massive inconsistencies because following your own rules is just too much to ask for. I hate them to the point that I don't read the big 2 anymore because I simply can not stand it. I don't want that in Star Wars. I don't want a reboot that resets the clock and completely misses the point of the source material. I want to see more stories in the universe I love, I want to see it grow and develop, watch it be nurtured and cared for. Could a trimming of the garden be good for Star Wars? Sure. I have absolutely no faith that it will be. Nothing about the people involved, Rebels, or the past years gives me any reason to believe otherwise. Let's not kid ourselves here, Bruce Timm and Paul Dini aren't in behind these changes. This is not the animated DC universe, this is another round of nonsense.