Would this be okay to do as a private individual? I'm just thinking that if he doesn't mention any of his companies and just say something like: "I like this st

Would this be okay to do as a private individual? I'm just thinking that if he doesn't mention any of his companies and just say something like: "I like this stock/crypto", if that would still be illegal and/or market manipulation. Then some days later, make payment available with Bitcoin.