[saltminer]

While this is somewhat true, the numbers are not on the side of the defenders here. With terrorist groups, the amount of people who would actually sign up to commit terrorist attacks or even associate with the groups (outside the countries that spawned them) tends to be fairly low. And you're probably not going to make much money, nor are there any real expectations that you could get rich since it's usually more ideological.

Starting up crypto miners, on the other hand, is a very low-risk endeavor. The worst that happens is you have to sign up for a VPN due to getting your IP banned. You probably won't make a ton of money (unless you do some major automation), but you will get something out of it that could dramatically increase in value, and it's probably small enough that it's literally not worth the time for affected companies to have their lawyers draft strongly worded letters, much less pursue you in court.

So, while law enforcement has a very limited number of terrorist groups to infiltrate, groups of crypto-scammers form and dissolve overnight, making it much more difficult to be proactive.