This user has problems with the YOBIT exchange. Therefore, it attacks people using YOBIT signature.
Participating in a campaign that is legal in the forum is not a crime.
I do not know the person, we did not have any interaction.

Last week I texted him and his other account to fix the trust.
It did not give a feedback to my message.

I would ask the moderators to do what's necessary.

Thanks.