Hmm. I disagree with that video on several points, mostly because I think it's a bit disingenuous and unfair. If you're going to make comparisons, you have to make them equal (or as close to equal as possible) for them to have any validity.
For one, he makes the point that, for the price, you can get that amp, an Echo Dot, and build the speakers he put together... except that's the entire point. You'd have to build the speakers yourself (including soldering!), have 3 (technically, 4) distinct pieces of equipment to maintain, and you have to have that unsightly hardware and wires everywhere. The setup he shows in the video looks like complete crap to me and there's no way that I would put it out for display like that in my house. The HomePod isn't meant to be an alternative for that. It's meant to compete with other wireless speakers and, when compared against those, it's a significantly better product at a slightly higher price. It's like the "I can build a PC myself that's way better than an iMac for cheaper". Sure you can...but don't pretend like it's the same quality, form factor, ease of setup, or any multitude of reasons why the price differs from a DIY solution. That's not the point here.
The other thing that bothered me is that he tested it in a studio with sound insulation on the walls and then complains about the audio and balance, saying that it's very bass heavy. Again, this isn't what the HomePod was designed for. The mics and the processor are specifically meant to listen for acoustics and reflections and use those to set up the soundstage for the speaker. He's taken all that away and then complains that it's too bass-heavy. Of course it's too bass-heavy! He removed the entire mechanism by which the HomePod determines its output!
Now, I'm sure everyone will be quick to point out that he moved it into his bedroom as if that's a good example of his objectivity. I would agree except that he then doesn't objectively assess the HomePod. He, again, compares it (which he says he set up on his nightstand or table) to his custom-built speakers that are mounted to provide directionality to his sweet spot. He's starting from a non-neutral reference point, comparing to something that the HomePod is not even attempting to be a comparison to, and then pretending to make the objective assessment that it's lacking. Of course it's lacking! It's also lacking when compared to my home theatre setup. That's not really a fair assessment. If he had put an actual Echo on the same nightstand/table and then compared them, I'd find that fair.
Again... I think the HomePod is really just a wireless speaker that is significantly higher quality than what you'd normally get from a wireless speaker at a slightly higher price. As an audiophile, I like it much better than my Echo, my Sonos, or the little Bluetooth speaker that my wife has for obvious reasons. Of course I can build something that sounds better for that amount of money. That's not the point. I'm not going to be able to put together what they did in the package they did for that money without a ton of hassle. That's where the HomePod is worth it to me. YMMV.