Wow, yeah it's much worse. It feels noticably sluggish and that's really frustrating. Like watching your favorite desktop app get turned into an Electron monstrosity.
The minimalistic and fast interface was why I liked Google authenticator in the first place. Feels like it's moving in the wrong direction just to service someone's promotion checklist.
If anyone at Google can connect with the person/team responsible, please tell them it was perfect the way it was and to just roll it back!