We're not talking about SRV/EJ/JB. My guess is the average digital modeler user, even the heavy tweaker, never would have experimented with "real" gear beyond a lot of flipping; MAYBE some very minor modifications. I doubt most, however, would have gone beyond having an amp tech check the bias on their tube amps every few years, swapping out overdrive pedals until they find the "right" one, and MAYBE some speaker swapping.
I only went there because @Sascha Franck did. I don’t think you need to look to pros to see this, my original post he replied to was more about regular guys.
If you think regular guys aren’t flipping and modding amps and swapping speakers looking for something, you must not have spent much time on TGP amp forum in the last 20 years.