When legal systems are closely watching crypto space these days, I guess you may not get any celebrity to promote a crypto project as no one could predict the future of it like when its dev will run away with investors' funds or declare a bankruptcy. So, up to Elon Musk level is just non-realistic in my view as well.
No one worries mate, Sam Bankman don't worry and you shouldn't. Actually, NFT hype was built on Influence Marketing, and this hype will return as soon as you understand that the whole market moves with KOLs. Actually, 90% of crypto projects have problems with the legal segment and soon after the bear market starts even trust worthy projects can be fake. But one day everything could be changed. Take a look at the banks now, Silicon Valley bank scam? why they are closed? It's just a business in my opinion.