hmmm... I don't know the real intention of these hackers, they could have done it just for fun but here you raise noteworthy points.
Freezing of USDT... OK , control.
Anyway... perhapes this fund transfer can be traced and all and the Mr White Hat (I don't know how they know the gender if that hacker is anonymous) returned it before tracing, but I like to think he had good intensions.
Unlike you I only enjoyed the drama in these episodes man and made an article on it -
@mintymile/super-dooper-defi-crypto-show
However, I am yet to learn how this hack happened and your article is helpful on that.
But I am not against community policing if a hack of this kind is there, imagine your an investor and your money is hacked on the chain, you obviously want it back, even if authorithies freeze it, validators reject it or control it. But, anyway..
I used to be scared of touching DEFI earlier, things have changed, I am dabbling in it, I hope I don't experience such catastrophies. Anyway.
RE: Poly Network Hack