Sure, but the problem is the seemingly very high amount of shady behavior in cryptocurrency. EG: In one category, you have reports like this that say 81% of ICOs are scams. (https://www.bleepingcomputer.com/news/cryptocurrency/81-perc...)

That's pretty damning to me. I would be willing to bet that 81% of porn sites are not scams. So putting crypto as a higher risk category seems correct to me.

(I also recognize that there's legit exchanges, especially outside of the world of ICOs, but crypto seems to have a massive fraud issue now.)