I had the displeasure of using AT&T's website today and even before I read your comment, I was thinking that AT&T must have a dysfunctional "development by checklists-for-PMs" culture. The site seems like UX appropriate for an SPA, but whenever taking an action, you get redirected 4 or 5 times before landing on the page you intend...only to have some of the elements "lazy" loaded, where "lazy" means "never actually materializes."

And when working through their two-factor-auth process, I kept getting redirected to a version that wouldn't accept my one-time-password because the javascript on the page wouldn't load for some reason. The trick was to switch from Chrome to Firefox.

I wish I didn't understand why it's possible for stuff to exist on big-company websites like AT&T.

Anyway, sounds like an absolute horrorshow for both PMs and devs alike.