The difference is though, if you like a bass very much and it is comfortable for you to play, you would spend more time playing and practicing it, which I think is exactly the point of buying a mechanical keyboard (at least for me). It makes working on it more enjoyable.
I am more efficient and effective with my (generalized) keyboard at creating input for the computer than a cheap because of factors like: I can customize the layout in ways that match my specific work and habits, I can individually adjust each hand of the keyboard, I can reduce the likelihood of RSI...
Yes, there may be non-mechanical options that address some of these issues, feel free to show me a non-mechanical that is easily programmable, supports "z if tapped, control if held", thumb clusters, and split hand ergonomic tilting/tenting. I haven't seen one.
So forget enjoyment of the user, I'm confident I'm more effective than I'd be with a $10 membrane keyboard, especially when measured over the lifetime of my career.
The guitar doesn’t make the guitarist but when it is a labor of love some do really care about these things.
Most tone there was found to be in pickup height adjustment.