This is why Tor is centralized, so that they can take action like cutting out malicious nodes if needed. It’s decentralized in the sense that anyone can participate by default.
While anyone can run a Tor node and register it as available, the tags that Tor relays get assigned and the list of relays is controlled by 9 consensus servers[1] that are run by different members the Tor project (in different countries). They can thus easily block nodes.
notpushkin|7 days ago
How does that work?
cyphar|7 days ago
[1]: https://consensus-health.torproject.org/