You can’t fault someone for being a loud snorer. Putting on earplugs and using white noise to mask the sound, and suggesting they have themselves checked for a possible medical condition, could be as far as you can go.
However, it can be a problem if the person refuses to acknowledge that their snoring has become bothersome to those around them. This is what happened between two roommates, where one had grown fed up after losing a few nights of sleep.
The frustration led to a petty revenge plot that caused problems in their workplace and even involved their boss.
