Repeat after me: Separating username and password fields on separate (fucking responsive) page WILL NOT INCREASE A FUCKING SECURITY IN ANY WAY! IT WILL JUST MAKE THE PASSWORD MANAGERS TO WORK WORSE AND THUS IT WILL FUCKING DECREASE THE SECURITY!!!
@ondrej apparently it is not because of security but SSO. https://www.smashingmagazine.com/2024/06/2-page-login-pattern-how-fix-it/ Off course you'll find people saying it's more secure, even some saying in increases usability ¯\_(ツ)_/¯
2-Page Login Pattern, And How To Fix It — Smashing Magazine

The 2-page login pattern is becoming pervasive. Here are the reasons behind this design choice and alternative solutions to create a more efficient and user-friendly authentication experience.

Smashing Magazine
@aloxe @ondrej like a chainsaw with two blades