I have not read this topic fully, but I will - and come back with a more rounded view.
But, I post-process everything. I learnt to shoot on an SLR without a light meter and the post-production literally starts a second after you take the film out in the dark room. Everything you do from then on - from how long you develop the negatives to how you process the prints - is "old fashioned" PP. I see taking a photo in RAW/JPEG and then editing this in Photoshop no different.
Oh and just for the record, I'm 23, not a granddad, I was just taught from the basics up.