We obviously have different ideas when it comes to EQ that's what makes this forum so much fun everybody has different ideas about stuff. I rarely if ever touched the tone controls on my amp after I have it set how I like it for whatever room I happen to be in. Then if I need to have changes in bass or treble. I use the tone control on my instrument and most of the time those are wide open. I also bury my touch and my position over the pickups or back by the bridge or over the end of the neck to get a different tone.Certainly, but I can’t do a ((freq B - freq A) * pct travel) + freq A in my head while I’m playing. A GEQ has less adjustment but easier to see and set (for me). Actually, the easiest IMO is the per channel EQs that you have on the tablet based mixers, but you would need a touchscreen to include something like that on an amp and not sure I’d want that.
Even when I used my acoustic amps with graphics I kind of did the same thing I use them to set my basic tone and then varied with my instrument. Also, when I did sound I used the dual 15 and third octave eqs to dial in the basic PA and rarely had to adjust them afterwards.