I'm glad someone else feels like this to be honest, I don't really think they're anything to write home about. They're not bad, but they're not great either - they're just good, in my opinion. They're akin to mobile game graphics, which seems perfectly suitable for the kind of game AC is, but...they're pretty underwhelming too.The graphics are definitely a step up from previous AC games, although I don't think they're as good as other games on the Switch.
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but to be honest for me the graphics are a little disappointing for 2020.
I will say the nicest part for me is the night sky. The gradients of colour are great, the stars look nice, shooting stars are cool. I also like that the chemtrails from the seaplane dissipate slowly over time.
I don't like how everything looks when wet, but I do like the ripples on the water from rain. I also don't like the moonlight reflecting off the grass - I think it looks kind of silly.