Fair point. The only people who this might benefit are professional racers and anyone who's got enough disposable income to be considering high-end groupsets.
But njee20 claims:
There are benefits for everyone
So which is it?
Woah woah woah woah!
I said (as you quote) "There are benefits for everyone". That is not "It will benefit everyone", it's an entirely different statement.
Mugging someone has benefits - you end up with their money and phone. We don't do it for various reasons; moral compass, jail time etc etc, but that doesn't detract from the fact that commiting the robbery has benefits, just that the negatives (in this example far) outweigh the benefits.
So yes, Di2 has benefits for everyone. It is not beneficial to everyone. Subtle but important difference there.
No, just something that works reliably and isn't unnecessarily overcomplicated.
Sounds like you need Di2, far simpler than anything mechanical - you ever looked inside an STI lever?