As a sighted photographer that is not into writing prose descriptions of my photos, because I post them for the photo, so I always wrote Simple AltTxt. Then I found a utility that writes better AltTxt than I would or probably could and find out many think that is wrong too. So I might just go back to writing "photo of a flower".
This is not meant to offend anyone just indicating my frustration on not knowing what I should do.
Not even sure I should be responding as the poll itself (which I didn't respond to) was not intended for sighted AltTxt users.