The most generous thing I can say is the OP has unrealistic expectations.
As an Engineer, I have designed traditionally produced injection molded parts and extrusions off and on over the last 40 years.
Typical tolerances are +/- 0.4mm (+/- 0.015")
For super critical dimensions, you can pay extra and specify +/- 0.125 (+/- 0.005")
For reference 0.1mm is the thickness of a sheet of printer paper.
The absolute error on these printers is very, very good. And you can calibrate it in the slicer to improve it. But there is only so much you can do.
Plastic shrinks when it cools. It absorbs moisture in the air and expands. It cools too quickly and it warps. You look at it funny and its off.
Holes shrink. Flash (or brim) happens.
These printers, finicky as they are (and believe me Bambu is the least finicky so far) are AWESOME.
The OPs opening statement “These printers do not print dimensionally accurate parts” expresses a degree of Engineering naivety and intellectual immaturity that I would normally attribute to a troll. But in the spirit of the community forum, I will instead suggest they adjust their expectations.
Engineers have been designing functional parts and assemblies despite manufacturing inaccuracies for hundreds of years. They think about what happens if something is produced that is a little too big or a little too small. And they think about where that part has to fit - and make the space a little bigger or a little smaller accordingly.
OP, I don’t know what you’re printing or building, but consider the possibility that you might be doing it wrong.