After all, if you suspect the feds control a lot of tor nodes you probably also suspect they’ve infiltrated or outright own the major VPNs; that they’ve got special access to the major cloud providers, and that they’ve got backdoors in things like TPMs and remote management agents.
Of course Tor has its problems - exit nodes with trash IP reputations, unreliable hidden services, evil exit nodes and suchlike. So it’s certainly not perfect.