I'm not offended, and do suck at art.
...there's no point in [Geoff] sharing his preference for star colors
Since you looked it up on wikipedia, I thought your original post
was asking about what a real neutron star would look like (which presumably would be inspiration for the in-game art). After my post
addressed that, I did mention a preference for blue neutrons and greenish black holes, which is a graphics issue and a preference. However, while I'm well aware I'm no artist, I don't see how that would disqualify anyone from commenting, in reply to an asked question, on the specific issue of what colour to make neutron stars on the map...
In general though, there's a grey area between art and UI design that lack of art skills alone should not disqualify someone from commenting on. UI needs to be both functional and pretty, and occasionally artists don't seem to adequately consider the functional side when making interface art.
or [Geoff's] ideas for the appearance of a star-selection reticle.
Some of my apparent art-criticisms do have a functional basis, such as the mouseover indicator discussion. My reticle suggestions
weren't meant to be serious art / reticle designs, but were just meant to illustrate the concept of a selection indicator that didn't depend on changing the star halo. It was an interface design post and solicitation of art (for real / good reticle designs), and not really an art post itself.
Regarding the concern for signal to noise ratio in graphics related posts due to volume of unqualified comments, that is a valid concern, though not one which I think is really a problem right now for FO...