Chas,

I think you're correct on about 90% of what you say. But here at the SZ, maybe a little caution needs to be sprinkled in.

Many "one take" recordings are put out there, just for fun. I've put a few out there myself and they are one-takes, but mainly because I don't want people to think I'm dubbing stuff into the recording. If I'm going to make a real recording, I want stereo, mult-takes, edits, extra musicians.
Some of us only have limited recording resources and/or ability (me!). One take, with mistakes is the result. My one-take may have been 20 run-thru's, but hitting the RECORD button causes all kinds of gremlins to appear.
I agree that we should know better than to post something we think might get flamed, but in response to such a post I would be "guarded" as opposed to brutally honest.

The SZ is a special place and STRANGE things happen here on a daily basis. Why, because we like it that way.