Semi-related: The trend of the not having a log in button and only a sign up button, requiring multiple clicks just to login. I get that less friction for a new user is better being the thinking but I truly hate having to go through multiple pages just to sign in. What happened to having sign in/sign up being on the same page? Seems the simple and easy, as well as lowest friction way of splitting the difference betwe…
Why seldom used? Because you stay logged in for a long time.
Is UX bull on this issue? Maybe, but if you are logged in for a long time, and then you come to log in when you've been logged out, it might be that you accept the lousy experience on this issue because you actually want to use the site... all that said I wouldn't care if the UX research suggested it was a good move. I wouldn't do it (on anything I owned, I would just argue against it if asked to implement it)