This a real shame. I don't use Tor myself as I have no need, but from a technologist perspective I'd love to know what methods the security services have been using to circumvent the system.
There has been so many cases in the news where criminals using Tor have been caught. Usually there is something saying "we found them as they accidentally used their email address..." I don't believe that for a minute, they obviously have cracked Tor and then look for some other reason to say how they found them. Just like how we did with U boats when we cracked their code and sent out spotter planes to make it look like we got lucky.