I've seen plenty of these sexsbul bots myself and many of them are not from Turkish hosts
It may be true that there needs to be a more effective way for spamtrap to catch them due to their tactics, but certainly no cause for an attempted ban of a country

The current solution, spamtrap, picks these up with no problem
Lots, probably most, of this type of spam isn't even from Turkey
Trying to ban some random country from the network isn't going to accomplish anything
Edit: Oh, and when you do see any spammers you are welcome to tell us in #spamfix

Sounds like a reasonable solution