While commonly taught in academic settings, I disagree with the notion that it's possible to self plagiarize. It's your own words and not stealing from somebody else.
You're saying that people shouldn't take a stance "without this basic evidence about the substance of the matter". The basic evidence is there. Take the time to watch Ben's videos, it's an hour of your time well spent.
It's big leap to assume that massage of peripheral lymph vessels (e.g. arms and legs) affect lymph draining in the brain. I'm always a bit perplexed when people's first reaction to new hard science is to assume that it supports more or less pseudoscience. Especially in a forum where hard evidence is the norm and encouraged. Just because some research shares a noun with pseudoscience doesn't mean that X supports Y.
That's a prevalent misconception even in the scientific community. Sure, each read has 1% incorrect bases (0.01). But each segment of DNA is read many times over. More or less 0.01^(many times) ≈ 0 incorrect bases.