Top loaders are basically an automated version of doing laundry but by hand. A 40-50 year old top loader which is probably what mine would have been today if it had kept working is much much simpler in many respects than a modern front loader. The spin cycle and it’s control is very different. I doubt you could build a modern washing machine with 1970 technology even if you knew what the end goal should be. And you need the right detergent too.

Added: And toasters still do a crap job of figuring out done-ness.