Hmm, feels a bit like nuance trolling to me. Everything you said is technically true, but if you want to dive into the weeds of every little thing you can also point to the fact that images aren't stored on chain, on DSound, those music files aren't stored on chain, basically if it's not text it's not stored on chain. Some people know that, some don't. I honestly don't think most care, especially people coming from Youtube.
They care about being censored and demonetized. That's all, and to that problem Steem DOES have a solution, (although you can be demonetized by other users, more details)
I dunno, I guess this just doesn't feel like constructive criticism. Especially with the whole "gotcha" feeling of posting code like you're outing the big bad liars of 3speak or something.
RE: "Decentralized" YouTube Alternatives on Steem? Nope, Not Yet | A Detailed Look at 3Speak and Dtube