They're obviously just farmers. Someone has nuked them.
Seems a couple were missed though:
https://bitcointalk.org/index.php?action=profile;u=2143122 MichaelTuttle May 21, 2018
https://bitcointalk.org/index.php?action=profile;u=2142875 SanfordJoe May 21, 2018
You can tell they're farmed accounts by their behaviour and other such giveaways. Same formatted usernames and same registered date and all post in the same threads.
If you see users making posts exclusively in spam threads in off topic like the above then just report them and they'll be nuked.
I think we should remove signatures from all accounts until you become a Senior or Hero or something. This sort of shitposting farming will probably stop then once you have to get merit. All those accounts need is to become a Junior Member which they will hit within a month if not spotted.