Does anyone really think bikes are that much more advanced than they were 30 years ago?
Manufacturing processes have evolved, but working on the bikes themselves are pretty much the same.
The only time I had to break out different tools was the brief time I owned a couple of 70's vintage Schwinns. Had to trade the metric allen wrenches for a 3/8 inch open end wrench. That took some searching. I use the same tools on my 1982 Bianchi that I use on my 2018 gravel bike. I did need to buy a bottom bracket tool for the gravel bike, but really no different than a freewheel tool for the Schwinns.
And through axles rock. Makes for a much more solid bike. Bike manufactures must hate them since they are actually more work to build.