@davidrevoy In this case it's more that the smoothing hides the other tells than being a tell itself, if that makes sense? Like in the original I can see the crisp shape of mini-Sepia on the lower screen, but in the compressed version it just looks like a detail-less smear (which is exactly what "AI" tends to do for those types of details) but it isn't clearly a nonsense-blob, so I couldn't confidently say it was a tell, and not just the compression smearing it.
Also, at least on my main monitor (but not my secondary; will check my actually color-calibrated laptop later), the color grading on the light in the upper left happens to match the "AI piss filter" color pretty closely. The screen having a very 'pure' blue makes it clear that it's not the piss filter, since that's always over the entire image when present, but some people might not realize that.
EDIT: got left and right backwards again...