This was on my recommends recently. At first, it seemed that I've accidentally clicked on a generic manosphere video, but it's the opposite: it's a full on leftist channel talking about leftism on practical terms.
The visuals do remind me of those generic videos, but, in this case, I think it's a plus, because it's like occupying those spaces: you see a good looking white man with kinda clickbait titles that look like self-development and you might not even care, but if this enters some young chud's recommends, it can have an effect. Besides his looks, his name is Harper O'Connor, so, common enough for anglophones not to dismiss him. I don't remember seeing something like this.
At least for me, personally, people in my life have been "convinced" towards socialism thanks to those "webcommunists"/"communist influencers", who were made up mostly by young-ish people who could "speak the language" of this generation — through memes, agitprop, lives on Twitch, YouTube, etc. One of the results was that in the last 3 years we saw an uptick of +10 thousand members organized in revolutionary parties (I'm not in the US), either officially or by joining their collectives as militants. Some of my friends are these people.
I found a YouTube link in your post. Here are links to the same video on alternative frontends that protect your privacy: