Do people actually tune their printer for each new roll of filament?
I do, but now I feel lile a sucker.
Always make sure to heat your nozzle to 240° when changing it, or else it may cause issues like stringing.
Unscrewing the nozzle cold can also strip the threads in the heat block.
How to uninstall 3DTouch?
You'll have to reflash back to the original firmware. Download from https://www.creality.com/pages/download-ender-3-pro, I'm guessing "Ender-3 pro 4.2.7 mainboard firmware (32 bit)".
Prusaslicer 2.6.0 is out
It's funny, I started using the beta for the organic supports and just thought all these other features were always there and I just never noticed them.
How does one save up for a 3d printer when there so pricey?
Maybe see if there's a library or maker space near you with one?