This may be a controversial opinion, I don't know because I have not seen posts on this matter yes, but to me Sylvie was wrong when she killed He Who Remains.
What I mean is not that I think, personally, Sylvie should not have killed He Who Remains, I think the "debate" between her on Loki on this matter was not a "choose your side", Loki was right and that's it.
Yes she wanted revenge and that's comprehensible, her feelings are comprehensible, but you cannot endanger the entire universe, or better, multiverse just because you suffered. You are not the only one who suffered from what the TVA did.
I really hope Marvel doesn't try to establish what Sylvie did "well that's her take on that". Her take is wrong. Why? Because she made in the moment he killed He Who Remains for everybody in the universe, she did exactly what He Who Remains did before her: take away free will from anybody else.
"Well, but even if she would have accepted the throne, it would have meant the same exact thing: she would have ended up making choices for the entire universe." I know! It's her who believes it's a different outcome, while it is not, she doomed the multiverse, not even because of a conscious, responsible choice (for example: "taking the role of He Who Remains, I am consciously making decisions that everything that happens in the universe in my responsibility"), she killed He Who Remains for personal interest and did not take any consideration on the consequences of her actions on the flow of time.
Sylvie's choice was not "a way of seeing things", Sylvie's choice was irresponsible, was selfish and I won't justify it just because "she suffered". She valued her revenge over everybody else's life, tell me how she is right.
And I expected better from her. Honestly, when she seemed way more focused on the mission than on his relationship with Loki (of which I am not a fan, by the way), I thought she was going to make a huge sacrifice just to complete her purpose because it was the right thing to do. I thought she had moral strength. I thought she was destroying the TVA so no one would ever be hunted down as a prey like her, but I was wrong. She acted on something personal, it's not a cause for the community, with "this isn't about you" she meant "this is about me and me only, I don't care who I have to step upon reach my goal" and that's a mentality I don't like.
I am disappointed in her. I expected a lot and all I got was...I don't know. I saw our Loki learning to trust people and call them friend, I have seen the sacrifice of Classic Loki, I thought I could see something good coming of Sylvie too. Call me delusional, because I am.