This seems fine to me, too. Personally I want easier to disambiguate tabs. The sexy Australis curves were peak Firefox design. I really dislike the new tab bar
Every time I see someone struggle with some UI, it really boils my blood that some asshole manager/tech bro somewhere decided to chase after fucking retention and engagement. And chose to make life more difficult and frustrating for some poor person who just wants to use the thing they paid for and own
Edit: Sorry for the rant, this doesn't really belong in the Firefox community. I feel like Mozilla has done a fairly decent job, it's just that I'm tired of all the tech BS and it pains me to see things being made so much worse