Also relays (not exit nodes) are pretty safe to operate and running them is a decent thing, supporting free internet instead of a corporate ads machine, let's not frame it as a "crime support".
Well the purpose of using Tor is to prevent any network operators from knowing who you're talking to. Which AIUI is primarily a concern if either you're not allowed to talk to whoever ("great firewall" type things), or you risk getting in trouble for talking to whoever (Silk Road etc, or disfavored politics).
I guess if you're worried about hacks and doxxing rather than LE? Or if you only call things crime when they should be illegal rather than when they formally are?
That's false to some extent. Tor's promise comes from it's vast population of users. The more users it has, the better it is to improve everyone's anonymity. So in a way, even by using it, you are helping Tor network. And please, save the "criminal" bs (meant for the original comment).
And conversely, it's enough to visit a random website running WebTorrent or just a plain HTTP DDoS attack to possibly "use your connection for cybercrime".
Since RFC 3514 unfortunately never gained traction, distinguishing good, bad, and illegal traffic remains difficult.