How much is enough or too much/

I've seen some post processed portraits the compared to the original real person did not in any way resemble the real person.

How much post processing. removing blemishes, freckles, etc. is proper to be done?

Are these phots where the face is totally devoid of any wrinkle, blemish, freckle, etc. what the subject is expecting or are they an exercise in "this is how good I am"?

Don't get me wrong I'm not berating those who like to do a lot of post processing and "remaking" the person. In fact I'm in awe of your skills.
I guess I'm just looking for some discussion of the reason.

Thanks.

(some) People are vain..... they want to be seen in the best "light". How much is enough ? I would talk with the subject about that, their expectations.

It also depends on what you are trying to achieve. If it is to make an artisitc "statement", then cleaning up is not a bad thing.

I draw the line where you can't recognize the person, instantly.

Other times, lighting can accentuate unflattering characteristics that, in real life, are not that prominent.

There really isn't a definitive answer.

Because not all viewers are Photographers/Photosho​ppers (this infers we also often critic, seems to come with the territory)

Most people just look at it and marvel at the Model or the Photographers Skill without knowing or caring what went into it.

And as many of us have learned at least once or in my case many times over... Theres a whole lot more to creating a work of art than most people realize.

Depends on who the target audience is. I photographed one woman who regarded her wrinkles as an integral part of her character. She would have been unhappy if I had removed them, though I did soften out some of the less flattering ones. I photographed another woman who wanted the photographs to look as glamorous and beautiful as possible, and I processed them as much as I could with out them looking obviously manipulated.