Why you think you have superior knowledge than Mike Benz or Benny Johnson? Are you a well-known authority in financial circles?
Spooky use of bitcoin is just another way around government control, just like using cash or gold instead of checks or credit cards.
Spooks are not the only or even the major users of stablecoins. It is anyone who does not want their financial transactions tracked, who does not want their finances subject to government control and confiscation at any time.
Yes, a lot of those people are criminals and spies. There area a lot of freedom seekers there as well.