I find it curious hoe many big corpos maintain .onion services such as reddit and meta (with facebook)
Also, many nodes pass through countries such as the US, UK, DEU, NL and so on.
My rule of thumb is that if something is allowed to operate and exist in the imperial core that goes a bit counterintuitive to bourgeois class goals (specially today with surveillance) then it must have another purpose not easily discovered by the public.
they can theoretically do deanonymization attacks on tor if they control enough of the nodes.
and as you said, most nodes are suspiciously located in western five eyes countries.