Re: [tor-relays] Is the public information for relays trustable?

If asking if what you see on metrics about MX or any other country is correct, yes it generally is. Though if you discover errors, you can file a metrics ticket with the suspected data in error and technical data proof that shows suggests metrics is wrong.

"Hearing that some ISPs block, thus no exits should be possible" is not technical IP data that anyone can look into.

Most big cities in non control freak countries will have some ISP that is more open to trying. You may have to talk to them about special hosting options you could make together.