Cant argue agains that. What you say makes sense. I still mean, though, that the experience as such with wireless for that price for home usage is superb. Just put on the headphones, grab the instrument and play. Yes, there is a latency, but it does not affect my playing. I give thumbs up for home usage!
There is one more thing to add: When you play with regular speakers, all analogue, there is also the problem with echoing in the room, creating an unwanted reverb. One reflection in a "normal" room will create an echo in the lower frequencys that is quite strong. This means if I now play with speakers i tend to feel that also introduces a problem as I got used to using headphones with 0 echo. And.. If I get to choose from 0 latency but with the room echo, or 22 ms latency with 0 echo.. Damn, I choose 0 echo and 22ms delay, haha
So it is very complex, there are many factors, so.. No easy answers that will fit everyone..
my thoughts about analogue transmission:
Analogue radio transmission it is just as quick as transmitting trough a cable, ~0 latency. The problem is the frequencies that must be allocated one per transmitter, and that yields licensed bands that will drive the cost. Also analogue electronics is more expensive if you want hifi sound. So I kind of ruled that out to fit my wallet.