Gosh that must have taken some time to research, really appeciate the time and effort you put into your videos, cryptoverse is my blockchain catch up show
MW definately has some crazy benefits in terms of speed and resource use and I think blockchains will follow this course to become lighter and lighter as we find ways to shard over various devices as nodes to make it a viable tool for all.
I wonder if though once we have second lay protocals on BTC and with ETH that you cant run MW over and above it and then sync that minimal data to the blockchain instead of what BTC and ETH is currently doing. Would be an interesting concept to explore