nope you're wrong because the game was not advertised as a trans content focused game but a harem game where you choose if you want to be with that li or not. anyone that was paying for this before the full nosedive into unavoidable trans content is fully justified for giving the dev criticism of content they didn't knowingly agree to funding. they could easily sue for reoperations and win if they really wanted to. he should be so lucky that all he got was criticism.
Bruv, if you tried to take legal actions against him, you'd get laughed out of court.
A harem doesn't somehow exclude unavoidable content, nor does the author have any obligation to not include unavoidable content if the author feels like it's an integral part of the story.
Man, y'all trans haters have some real delusions you're dealing with if you think that any of this has any sort of legal basis to stand on.
It's like trying to sue a game studio for "unfinished content" in an Early Access beta.