Twitter and reddit drive me up the fucking wall. Twitter removed most functionality if you aren't logged in and hits you with a popup about once every 0.1 seconds as you scroll but gives up when you close it about 6 times. The mobile reddit site is just straight broken. Images disappear if you click in the wrong place, video doesn't work, can't change search options, posts act like they fail resulting in duplicate comments. Yet they have the audacity to push their shitty app down your throat every other page which is just a webview of the mobile site with the same problems.

These companies will do anything to inflate their user count and get more access to more data to sell. Instagram is particularly egregious about inflating user count. You can make an account without even verifying your email, but you can't log in again or even delete your account without linking a valid phone number. There is probably a 7 figure number of abandoned accounts like that.