The USA is mostly the gov't with the reach to monitor TOR that thoroughly, but other countries might be doing enough, too. Also, the USA is well known to share intel. If you're annoying Iran, Saudi Arabia, Russia, Israel, China, Germany, or any Five Eyes country, at least, TOR is helpful, but not sufficient. And probably several more countries.
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At least here "highly illegal" can be read as "highly illegal according to the US"
The USA is mostly the gov't with the reach to monitor TOR that thoroughly, but other countries might be doing enough, too. Also, the USA is well known to share intel. If you're annoying Iran, Saudi Arabia, Russia, Israel, China, Germany, or any Five Eyes country, at least, TOR is helpful, but not sufficient. And probably several more countries.