AFAICT, in all current cases it isn't Tor itself that's been broken by the authorities. It's the client end that has been compromised; and in a way that isn't specific to Tor. Had these users been using a VPN without Tor, they could have been compromised in largely similar ways.

Please, find me a counter-example - because I haven't seen one.

Admittedly, one thing that has happened is that the authorities are able to target compromises in the Tor Browser specifically, rather than in a wider range of clients that non-Tor VPN users might use. But they're probably more vulnerable than the Tor Browser is anyway.