Yeah, low UPT washout rates is true. If you want it and study for it, they'll probably find a way to get you through.
If you do washout or DOR, it depends on the style of your leaving and what the AF needs at the time. If you just quiet quit (stop studying, etc), your IPs will probably hate working with you and give you zero support...sucks to suck.
If you try hard, but just can't make it work (rare), you'll probably get good recommendations for your next AFGSC.
If you DOR for a well thought through reason, you'll probably get support. If you DOR a month into flying because it's "too hard" and "too much work"...yeah, IPs aren't going to have sympathy.