Yeah, so that's more or less what I thought. Yes, I have disc brakes, 32 spokes. The rim has not been warped severely, but has been trued a couple times (had 2-3mm side to side wobble). Oh and all of the cracked spoke holes are with the drive side spokes (rear wheel), so it must be weak rim + overtensioned spoke issue. I'm getting a new rim tomorrow and hopefully it gets properly installed.