It couldn’t be more fundamentally different for people who just want to read content without an account. Previously, Twitter was a thing that existed, now it’s not a thing that exists.
99.9% of people will just click the google login button and continue on as if nothing had happened. i sympathize with you. i had to make a throwaway google account. but it's not even close to relevant to the vast majority of users. not saying that's a good thing but it's reality.