All I care about is playing your parts and interacting with the audience. Whether you have a music stand or not is irrelevant.
There are guys who don't use music stands, and stare at their shoes or fretboard for the whole show. That doesn't pass either. If you use a music stand and interact all night, no problem. A good public speaker can make eye contact with the audience while still working from note cards, and a good musician can do similar.
There are guys who use stands and still flub the parts, or have the wrong chart and mess things up. May as well ditch the stand since what's on there is of no use to you. I find that charts to be the most helpful if you heard the piece before and can hear the changes and arrangement. If someone can't remember their parts, or is prone to brain farts, I'd rather have them use a stand with notes than trainwreck a song. IME, people will notice a trainwreck more than they will notice a music stand.
Having a music stand does not necessarily mean that you stare at it all night. A stand could have simple notes like "12 bar shuffle in A", which serves as a quick reminder. If you stare at that for a whole song, you have other issues. Also, a stand can serve other practical purposes other than holding sheet music. The lip is handy for holding picks, capos, slides, pens, flashlights, etc. It's also a handy and unobtrusive way for someone to give a note to the band like "guitar player is too loud" or "there's a white Ford Bronco about to get towed".
I laughed, but it's true.
