So if you're not able to respect the first rule of this forum, I don't know why are you here?
You're not a moderator though. Report shitposts to moderators, let them deal with it.
"No zero or low value, pointless or uninteresting posts or threads."
That has nothing to do with his/her/it's trustworthyness unfortunately.
If you believe that account is an alt, you should tag it as an alt, not as a spammer.
I will not argue for hours because I hate that.
If you think it's the best way to do, it's ok for me, I leave you the responsibility of the case.