You've raised an interesting point....and I suspect flaw...with BlurXterminator.
It does tend to localise sharpening in weird ways.
I've seen even more bizarre artefacts with Topaz Denoise AI.
PixInsight's deconvolution while not as fancy, at least applies changes globally, as does MaxIm's LR decon.
I guess it a case of the newest tool in the shed is not always the most productive. Hammers are simple, but work every time
