About a decade ago I was pushing for more "designing for 3d printing" classes, not only in my own curriculum but also telling anyone who would listen how important it is. Having a design that is designed from the start knowing that it will be manufactured on a printer makes the end result much more usable.
Having a solid machine is the first step (this was a major limiting factor to a large number of people in Reprap). This though...is not the most important step. The slicer is the most difficult thing for people to actually "learn". This is why printers like Bambu have such a large "new user" following...they have presets that "just work". To most who have printed for a long time this is less of an issue (which is part of why printers like Voron are still popular).
By designing properly you can ease the pain of slicer "tuning", as well as, making your parts stronger in the use case they are planned for. Orientation for strength is a major thing that the inexperienced seem to forget about. I don't know how many designs have been given to me to print that not only are bad for printing, but also, they are not designed in a way which ANY conventional machining/molding can make in a cost effective way. I have wasted a lot of time explaining the things that are in this article to designers...often for them to have me print it as is.