I think it's safe to say that 99.999% of people do not share your bizarre youtube-watching setup. I think it's also safe to say that the 60s-ish master craftsman featured is never even going to attempt to cut down his demonstrative, highly visual content to fit in an inferior, limited blog post.
I don't even know what your point is. How about you try not watching videos through a VM with no sound.
If you prefer text that's fine. But you must be cognisant that a very large number of people do not, and that in many cases you're losing a lot in the translation - including that the translation may never be made in the first place. Personally, I am fine with both. There is a right tool for the job.
> I don't have sound because it'd be a security vulnerability
This just sounds to me like a kind of narcissistic paranoia. Dude, the NSA isn't spying on your youtube habits, and if they were - the VM, or anything else, wouldn't help you.
Do you or did you consume all of educational content through static text and images only? Or maybe, just maybe, a lot of things were explained and shown to you?
I don't even know what your point is. How about you try not watching videos through a VM with no sound.