My first instrument is a violin. There's not been relevant advancements in centuries,
I know nothing about violins, but even I know there have been a few tech advancements... how about an electronic wireless violins?
Yes there are MIDI violins here too as are midi guitars, etc.... But this is comparing apples to oranges, right? So that's not my point though.
Electric accordions are part of the evolution (Cordavox, Elkavox, Hohnervox, etc...), digital accordions are part of the evolution (V-accordions, Musictech, etc...). Using new compounds like carbon fiber, solenoid switches is indeed part of the evolutionary history of the accordion now too, kind of hard to deny that.
Does that mean that acoustic boxes are going to disappear? Of course not. The "new wave" of technology is also not for everyone, nor is it expected to be... but as long as humans and their need to innovate, advance and yes, make money off of exist, these kinds of changes are going to slowly continue, which sometimes are not a bad thing (I feel the accordion world would be in a worse place with fewer new users without Roland doing what they did). Finally, there are going to be people like me that may love the old original designs but also enjoy seeing those advances and are often open to voting with our wallets when we approve of a direction.
You say that you are fuzzy about what technology does "for us"... just speak to someone other than me that owns a V-accordion, ask them why they voted with their wallets... that will partially be your answer (it will be different for near everyone whom you ask), about what this tech does for us as accordionists.