It is much, much more likely that law enforcement hacked onion domains because of their improper implementations of TOR procedures and/or general shitty security than it is that they discovered a fundamental security vulnerability in TOR.

The weak link here isn't TOR, it's the doofus who bought the Tesla with $130k worth of BTC.

Which is why I would never mess with darknet sites. I trust the TOR network, but I don't at all trust the individual domain owners.