For the consumable stuff every car owner has to deal with, nothing has really changed in 40 years, honestly! A brake service is still done the exact same way, same with virtually all the fluid services.
I just find far more people parrot "modern cars are so complicated" today and don't even consider that in fact, it is relatively simple to change a brake pad and disc, or your own oil, perhaps an air filter, even on most brand new cars. Fluids filters and brakes are like 90% of most people's maintenance needs nowadays.
YouTube has also massively lowered the barrier to working on cars, given there are multiple easy to follow guides for just about any car service for any car model you can think of.