Doesn't running a post office help people communicate coded messages about nefarious things? Doesn't running a telephone network help people do the same? What about cellular hardware providers and maintainers?
> Doesn't running a telephone network help people do the same?
They do, but they are not only share the metadata with law enforcement, but also let them wiretap. (Often they require a warrant for this, but that is not a hard burden for a LEO.) And this capability is not some aftertought, but deeply integrated into their tech stack.
Tor isn't a post office or telephone network. We have post offices and telephone networks. Tor also isn't a replacement for a web browser or internet, we have those too.
Tor's feature isn't "communication" in the abstract, it's anonymity. And yes, that can be used for good or for evil. But the upthread comment was saying how nice it was to run an exit node because it was "helping people". And to the extent that's true, I think correct thinking demands you also account for the harm.
And let's be clear: Tor is definitely harmful. Almost all Tor traffic is some degree of nefarious. The tiny handful of dissidents are drowned in a sea of phishing and contraband.