i see that even so they closes all current public trackers new ones will born with another domain or with another new name.
and about count on public safe or not, in mean time the public trackers not safe any more as your ISP can terminate your port for p2p if they logging and caught u uses trackers that go for infringment of copyrights at the end it depends on ur ISP, and also public trackers not safe for your accounts on private trackers as you peering with public ones that you dont know who they are.
My personal view : Switching to private more secure and more effecient way to downloading, uploading and privacy too and also its closed communities not every body know everything about that's it my friend