Would you want a tachometer on a generator? This is effectively what the gas engine is in the Accord, until it reaches highway speeds, where the engine becomes coupled directly to the drive train. I much prefer seeing where the power is coming from or going.
Of course I realize this is a subjective thing, and maybe some would find knowing the engine RPM useful.
Definitely subjective.

I am looking a possibly replacing my 2018 Accord Sport 2.0T with a hybrid, preferably 2021 EX hybrid. My wife recently got a 2016 Lexus CT200h, and while I was playing with the display settings, I found that you could set the tachometer to be on automatically (i.e. it would only appear in Sport mode), never be on, or always be on. If you have it in the Automatic setting, it appears when you're in Sport mode, but if you're in Normal or Eco, it changes to a charge meter. I personally like having the tach on all the time because, aside from knowing the engine's actual speed, I can instantly tell when it goes into EV mode, because the RPMs drop down to 0. I kinda like that! But again, it's just me.
What I don't like, on both the Accord Hybrid and the Lexus CT, is that they did away with the engine coolant temperature gauge. I know that in a hybrid, the temperature would probably fluctuate between cold and normal, but at least you could still tell if it was starting to overheat, before you got a red warning light. (My wife's previous car, a Fit, also had no temp gauge.) The Camry hybrid has one. But again, this is just my personal preference. I suppose I could live without a tach and a temp gauge in order to save some $$ on gas...
