Besides recieving these kind of messages, what are the other risk factors of using your personal phone for punting?
Your wife/partner finding out.
Your work auditing your phone.
Losing your phone which you use to do banking with, that has all your family and friends numbers in that a WG may send a group text to touting for business or blackmailing.
Losing your phone and it gets passed to Sergei who tries to blackmail you and/or others.
Wifi hack.