Tools require knowledge. 3D printers are no different in that respect and to toss $100 on a printer just to learn is money very well spent. And those old Prusa's excel at precision work, we can do stuff on those that we can not touch with any of the others.
Other than basic troubleshooting (which they have documentation on) there isn't really a need to take a deep dive into how exactly each piece works.
I say this as someone who started printing many years ago with an i3 clone and has replaced nearly every piece of multiple printers (control board, bearings, hotend, extruder, etc!) over the years for better performance. I moved away from wanting to tinker with the printers and haven't touched them since getting a P1S years ago.
Most people just want something that just works out of the box using models they downloaded from the internet. It's great that you want to have a 3D printer that performs at the absolute limit of the hardware but that requires work.