Christ in a handbasket, I go to bed and come back to a full-blown slap fight. Shitty doodles made by an e-beggar are srs bsns.
No is saying that Luna has no right to reject commissions - by all means she can go right ahead, less competition lol - and certainly no one is so invested in Luna that they're offended by the thought that she would reject them.
However the flip side to that is that no one has to utilize her services, and when it comes to an already competitive area like online art commissions (mainly because every twat with a DA account thinks their shit is good enough to pay for) when the amount of subjects you're willing to cover is less than the ones you don't, and you're quite frankly not good enough at the subject you
are willing to do to garner interest, the end result is that the vast majority of people will simply write you off as being too much of a hassle to work with - even if their commission wasn't something on the rejection list.
Hell, this doesn't apply to just NSFW material in Luna's case. She also can't appear to do backgrounds, multiple characters, props, different faces, or any sort of fantasy material. Sure, she has
a right to not do those, but that's over half the art commission market that she can't cater to right there.
Finally, the other thing about artists like Luna is they tend to not get how their "no" lists limit their own markets, and often act like they're entitled to people commissioning them or getting money just for being """"oppressed""" and, lo and behold, look at how the commissions have worked out for Luna so far: