I am no expert, but I thought the weakness of tor was that a goverment could control many of the exit nodes (combied with timing attacks to find the user?), sin

I am no expert, but I thought the weakness of tor was that a goverment could control many of the exit nodes (combied with timing attacks to find the user?), since most users don't want to run them for fear of being arrested for whatever the users were doing on the network?