He just can't help but keep repeating the word carbon carbon carbon carbon e-waste carbon carbon, but is seemingly unable to utter the forbidden 'nuclear' word at all. Could be a California thing, I suppose. They seem to prefer rolling blackouts to advancing technology for mundane everyday things like energy, as it appears.
Another, totally unbiased and very academic reference is to a blog named: LAWFARE, specifically an article: "How to Start Disrupting Cryptocurrencies: “Mining” Is Money Transmission". Absolutely no agenda here, nuh-uh.
He then proceeds to cite a 2018 paper on decentralization of mining, from IC3, which is headed by Professor Gun, as a supposedly credible source on bitcoin and ethereum mining. Professor Gun launched his own coin around the same time the cited paper was published, and at the current market rates his conflict of interest is measured in single digit billions at the very least. Good for him, but does not make for an impartial research reference, would you cite Peabody Energy on benefits of coal, do you expect them to say it's terrible?
This lecture is simply just DR peddling carbon alarmist dogma and malthusian doom porn for your consumption.
You've literally just read an ideology piece with references conflicted in billions and you believe it's accurate and well researched.
If this is what passes for expensive "education" at a high-ranked university in the US, many more things I found rather puzzling about that country are immediately clear.