i think it's a feel thing, if it sounds good, it is. but most people are overly critical of their own playing
i had an issue with note avoidance over the weekend, and i've had it before, but never heard it discussed.
my brother played something that he created, and i was noodling over it, i'm not even sure what the chords were. but i could play A minor pentatonic, and it sounded okay. but when i tried to play a minor scale, everything worked except for f, and when i tried f# that sounded awful as well. so i just avoided those notes.
i always feel like i'm missing something, like maybe there's a better scale choice and i'm just working with the next best thing.