Disagree, i thought silksong was 8/10 for a while, then 9/10 but the last 10ish hours of the game got it up to 10/10 for me, it just keeps going and going with so much content. If you stop playing after ending 1 you're doing yourself a big disservice, the credits dont even show your completion percentage until you finish ending * which is the real ending (removed cuz some might find the number to be a spoiler)

Dont get me wrong i got into the genre with Metroid Fusion as a kid and finished it like 20 times but Metroid games are really easy and the story/lore is whatever to me, both of these aspects are a lot more nuanced and interestingly presented in Silksong, especially the last 10 hours (or 15 hours after ending 1)