I'm a bit torn on their crackdown on trackers, mostly because I find the ingame tracking system to still be immensely lacking. Often, being able to see where in my town to go for interesting spawns is what motivates me to go out at all when otherwise I just wouldn't, because I get tired of stumbling around places catching only commons.
On the other hand I feel like spoofers and botters are a huge problem for the game, so I'm glad Niantic is targeting them.
It's difficult. I really just wish they'd come out with a decent ingame tracker. Until then I think I'm grudgingly okay with giving up live trackers if it means getting rid of the cheating gym-hogs out there.