Everyone who has not regarded crypto as a scam will certainly do
It is easy to get scammed, but it's also easy to get scammed with legitimate-sounding services. I just had a scammer try to steal my money from my bank by claiming to be the fraud department, does that mean the banking industry is a scam? People on the sidelines will try to make a buck in any industry. What about cosmetics? There are plenty of MLMs that peddle cosmetics, and they're scams, but that doesn't make all cosmetics or even MLMs scams (e.g. tupperware is an MLM and not a scam imo).
Whether crypto is a volatile market doesn't have anything to do with being a scam, it just increases the number of people trying to make a quick buck, and some of those will try to pump and dump or pull some other scam. Before crypto, that was more common with stocks, and it's fairly common today with third party resellers of various things.
I don't think Trump is trying to pull a crypto scam here, I think he's just trying to get elected. He wants the scammers to promote him, as well as the crypto apologists. He just wants more people talking about him so he can increase his chances of being elected.