Oh come on. Especially in a game like this you don't want crashes. It's kinda mind-boggling people find it acceptable just because "it is a huge game". I wonder if it would be the same defence if it would be a Ubi game.
It's pretty common for games to have some crashing issues on release day. I have had several crashes in Horizon and Pokemon Legends Arceus recently. It sucks but it is what it is.
The more concerning part is the frequent micro-stutters, that can really take me out of being immersed in a game. I bought a copy on GMG a long time ago for a big discount, but if it gets really intolerable I may have to switch over to console. Alternatively, may end up switching back to Horizon for a bit to wait for a performance patch if it is too bad.