It varies based on the jurisdiction and the specific regulatory framework. They are not illegal everywhere.
No need to be illegal everywhere . You might get extradited in a foreign country .
"Unauthorised persons, such as social media influencers, who promote a regulated financial product or service without approval of an FCA authorised person may be committing a criminal offence. We also include guidance to provide additional clarity on when a communication might constitute a financial promotion."
https://www.fca.org.uk/publications/guidance-consultations/gc23-2-financial-promotions-social-mediaYou don't understand that things are getting more rough , forget the far west mentality and prepare . You might don't get it but we say this for your own good .
https://github.com/orgs/community/discussions/66147