I think it may have to do with when you are using your name and fame to sell a product, you best be 100% assured that what you are selling is as advertised. Or else you will become responsible if that product is a fraud.
Kind of like being along with someone who committs a murder. You are also responsible even if you didn’t do the killing.
I guess that makes sense somewhat. To expect a celebrity to understand almost anything they endorse seems to be a stretch to me.
Especially financial instruments.
How many here can actually explain, in depth, crypto?