I personally have multiple accounts on multiple sites.
None of them are fake, all are well behaved I think, but there are some things that are best said with an account linked to my name and some things that are not a problem to discuss pseudonymously that could create major hassle for someone if it was connected to a name.
It's not "just created by another user," it's created by the owners under multiple false names meant to give the impression that it's multiple people (sock-puppeting) and that those people are not the owners (literal shilling.)
It's an obvious fraud, but the law is probably far behind. Who would sue unless there were some financial risk involved, and without financial risk who would even have standing to sue?
.......and promptly win about $1.98 in the process.
It’s akin to putting a fake pic on a dating website as far as I’m concerned.