The "point" of the video is to stir up fear like prices won't eventually come back down again. As I said before, this has happened before, it's happening now, and it will happen again. Prices go up and hardware becomes scarce whenever something big comes out or there's some kind of shortage. Remember when bitcoin farming became a huge thing? You couldn't find any decent card for under $1,000. Remember when Crysis came out and everyone said you're going to need tri-SLI configurations just to max it?
There's also another factor nobody has mentioned yet - covid. Due to the pandemic, many people lost their jobs or were working from home or working reduced hours in all facets of employment. I can't imagine that the GPU manufacturers kept their people working like normal through 2020 so that puts a strain on supply. With more people staying home and doing nothing (those with money), a lot of people have been jumping into PC gaming which caused demand to skyrocket. High demand, low supply... you do the math. Videos like the one you embedded serve no purpose other than give people cause to freak out and think the end of PC gaming is nigh simply because prices are high and some people are saying it's impossible to have a budget PC anymore.
Give the world time to rebound from the pandemic and get everything as close to normal as it once was and give companies like eBay and Amazon time to figure out how to deal with the scalpers (other than using bots to auto-inflate the scalper's prices). I agree that it really sucks that prices are so high right now because I had fully planned on having a new PC by December of last year, but that's life. I wish it was different, but waiting a little longer to build my PC won't kill me and by the time I get around to building it, I'll be happy I didn't spend $1,500 on a single GPU.