I just gave it a try on my site. I’m not sure what everybody else thinks, but this seems like a pretty big downgrade to me as a password manager user…
This new flow removes the current “generate email, type username, generate password, save” strategy that my password manager has pushed me into and forces you to type the email first before everything. I don’t have an issue with the email code thing (and in fact almost prefer it, especially if the code is included in the email subject) but I strongly oppose removing the other account data boxes. If I were a user with zero technical background I would also see myself not handing out my email to a box with no info like this because it isn’t a common design. Before this becomes a permanent thing, it’d be great if that was added back.