Motors used to be BOLTED together, now they are GLUED together.

50 years ago you were working on brushed motors with relatively sloppy tolerances, less torque, and more electrical consumption. Today’s motors are faster, stronger, lighter, more efficient, and designed to higher tolerances.

It used to take me a half hour to change the clutch slave cylinder on my truck. Now (newer truck) I have to PULL the transmission to do that.

Very few vehicles in the U.S. have a manual transmission and the prevalence of them is decreasing quickly in all western countries. No matter how much we may prefer manuals it’s inarguable that modern automatics get better fuel economy, are easier to operate and are often stronger than their manual equivalent.

My point here is that often the same advances that make things better make them more difficult to service.