Personally I do agree though, that many people in the fandom DON’T understand Sasuke, and many also choose to sort of sweep under the rug his many actions of wrongdoing to preserve the sanctity of the ship
Which I don’t agree with, because choosing to ignore a character’s actions is misunderstanding that character.
Sasuke is one of my top absolute favorite characters and I can freely admit, that I don’t fully understand him
I understand the point Rem was trying to make though. I have some background in psychology and what he said did make sense to me. Sasuke was traumatized as a child and lost his family, and without any treatment his emotional and social growth was stunted and there is an imbalance with him and Sakura, as she had a childhood that included that stimulation and enrichment since she had her parents. That doesn’t make the ship bad in that regard; it acknowledges a flaw that makes the ship believable and human
As for Sasuke’s sexuality, I headcanon him as asexual, but there’s nothing in depth for it for me
Rem consulted friends who are asexual to ensure he wasn’t being offensive or making incorrect statements, and a good handful of the people upset about his bit on asexuality were the same ones flaring up against ace Sasuke because they assumed it meant we all thought Sasuke was sex-repulsed, which was entirely not the case as asexual people can and do have sex there’s a group on the spectrum that is sex-repulsed but not all of them
And Rem even said he expected backfire for his essay, because while he doesn’t actively ship SasuSaku, he does like the characters and I think he does support the pairing, but for some sasusaku fans that isn’t enough and they work to snuff out any who might break away from the “sasusaku is flawless and no one may say otherwise” mentality.