Regardless of the legality of the service: I always use xcancel instead of X. I don't have a twitter account and I don't want to sign in. I just occasionally want to read what some people had to say about something. Even this is usually a mistake. It's probably better taken as entertainment. My point is: companies stop making your product suck, and people won't have a reason to try and fix it for you.
The last time I signed up for an Instagram account (2016) it got immediately flagged as a bot account. I think I was supposed to appeal it to have it reinstanted, but why bother if this is how badly they treat users?
Can you imagine going to work as Instagram's web developer, spending your day finding new ways that the app accidentally works and disabling them?