You probably shouldn't be thinking about brain drain in a hypothetical future society when choosing what to study in university, just go with what you have the most passion for. I also don't really know if such a simplistic explanation of left unity is productive or even belongs in this video.

I found a YouTube link in your post. Here are links to the same video on alternative frontends that protect your privacy:

• yewtu.be
• inv.nadeko.net
• yt.artemislena.eu
• piped.video