DARTH said..cantSUPenough said..
Very good point.
When it comes to choosing people in surf magazines to promote surf culture merchandise, you would choose a short-board ripper every time. The exposure of their sport, and their abilities can't be compared to all but maybe a few SUPers (who you mentioned). When SUP surfers can do desirable things that short-boarders can't, then maybe our sport will achieve greater exposure.
The trouble is that in the surf community, on the spectrum from admired/respected to chastised/hated, we are well and truly at the wrong end. If you behave in the line-up, and surf reasonably well, then you may be tolerated, but then some kook will paddle out and wreck everything...
How about SUPs not going out into crowds at all, really I don't care how good you are. 80-90% of people who SUP cannot control their craft in crowds but yet I see it all the time.

how about any surfer on any craft, whose board is bigger than mine, be banned from lineups!
i had words with a serious wave hog on a huge log of a long board--i ducked a wave and let go of my board, totally aware that there was no one anywhere near me--guy said "youve got to control that thing"--then he proceeds to go over the falls and actually get his looong leash tangled with that of a shortboarder--i laughed in his face when he got back to the lineup
it is key to be in control of whatever board you ride, and to be aware of anyone around you
kooks ride all craft