So people kind of knew asbestos was harmful wayyy before it mostly stopped being used in 1979 (USA). But, it was still used constantly in many industries and ended up everywhere. What do you think is an example of something we find out is DRASTICALLY harmful 10-50 years from now? My guess would be screen time.
So you swapped out a few pairs of NOS parts on a couple classics. I worked as an engineer for akebono, one of the biggest brake manufacturers in the world. Almost every European and American manufacturer ditched asbestos around 1990. Some imported “value” pads may contain asbestos, and some classic cars are still gonna have asbestos pads. But the vast majority of cars on the road do not.