I bought a PenF about 5 years ago when it was new. Brilliant idea of short mount allowing all kinds of optics including my ancient Leica R stuff.
Also good to skip mirror mechanics and enable enlarging the middle spot to focus, EXCEPT that the focus and spot-metering point moves at random when you squeeze the body in order to steady a heavy lens. Auto speed settings following from choice of aperture + manual override works well.
There are bells and whistles, but I do not care much about frail and error-prone autofocus mechanisms. I can do focus stacking and HDR on the computer so those bits are irrelevant. Stabilization works fine and the consequent option of high resolution following from sensor movement works when using a tripod.
I only use the camera to take pictures, not for phone transmissions, so draining the batteries with wifi to transfer pictures to a phone is not on. but I do miss a cabled USB link when using a tripod. The Canon system which I used before allowed the use of my big screen laptop.
The menu lacks a "do nothing" option for all the buttons, otherwise the un-manly study of the handbook index answers everything-
My conclusion is that for purposes of serious photography, the Pen F can be much simplified and improved so as to be like a digital M-3. If the Nikon Z7 and the PanS-1R had not been so fat and full of expensive trivia they would have been a serous alternative.
p.