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It is a very interesting field of discussion (Processing techniques in general, not specifically AI processing)
Where do you draw the line, in my own case having shot M42 yet again recently so I could compare the old scope and the old camera with the new, you could argue that I should have made a decision between revealing the much more faint dusty stuff spread around the field, or revealing the core of M42, rather than using layer masks to bring through a less stretched core. I tried for a light touch, just enough fainter stuff revealed to make the trapezium stars visible, rather than other images (Which are often still interesting anyway) where the effect is to flatten the brightness range so far that the dust is still visible in the background, but the core area looks more or less like it does visually at the EP.
Regards to AI sharpening or de-noise, I downloaded the trials and had a play and I could never find an application of either that pleased me so I deleted both. I don't have a problem with the concept of the AI de-noise as such but it certainly needs to be applied with a feather, not a firehose. Others seem to get a smoother and more subtle result out of the AI de-noise but it didn't work nicely with my data. I will leave that to them to use or not.
The AI sharpen filter I tried and immediately saw artifacts I have seen in other images and didn't like, it was a bit of an "Ahh, that is where that is coming from" moment for me.
I will put my hand up to using some PS plugins though, but the ones I use don't do anything I couldn't manually do myself (I am happy to pay someone for working them out) and I apply them pretty sparingly, I often reduce the opacity of the resulting layer to reduce their impact.
I don't have any trouble with the concept of astro art either, the images linked above here in this thread I wouldn't go putting on my wall, but I have seen plenty of NB images that I would do.
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