Pretty much true. Once I got over the minor hurdle of buying a code reader, there's very little change in basic diagnostics. OBD2 codes have been enough for me, so no scanning. The internet is a boon. And components are generally more reliable than before, with basically more sensors to go bad. Fuel regulators, pumps, injectors, coil packs and belted accessories are the main problems. I don't pull engine or trans anymore, but haven't had to. Had one car to a trans shop once to replace a valve that caused hard shifting. Jackstands are all I need. But hoists are easy and cheap enough if I needed them. Honestly, for about 15 years now, the only time my cars have been to a shop is for exhaust or tires.
I've replaced a few window motor/regulator combos. Most I paid was $105 at a GM dealer. The other 2 were mail order aftermarket, about
60 bucks each. There's some labor, but not much. An hour or two for me. I'd rather have manual windows, but they just aren't offered. Stuff like tail lights are best had at the boneyard if possible for your car. My main concern with modern cars is behind dash componentry. Very difficult to work with, but that's just how it is. But it's been only a worry, since I haven't had to do it. Good reliability from all my modern cars.