Some of that was subjective for sure and he had to justify the differences between them to make the video.
As for the web page loading, while the network is indeed the biggest factor, I do see slight differences between computers in rendering speed, other factors like the software being equal. For example, the Brave browser is touted by its makers as being very fast, even compared to Chrome which it's based on and indeed it does feel that little bit snappier. It could be due to the content filtering that it does, perhaps, but it's true that out of the box it feels snappier on my PC. Not a huge difference, but noticeable.
And yes, it depends on what you want out of a product in the end, as he said.
For me, I would still get the new mid range phone, because it's, err, new. That means no wear and tear on it, especially the sodding sealed battery that fades with time and use, a full warranty and much longer support with software updates. It's that last reason that I went with an iPhone a while back, nothing else. I still like Android very much otherwise. Now, Apple jump on security updates pretty quickly. Can the same be said for Samsung or any other Android brand? I don't know, but I have my doubts.
I thought that it was quite telling that Apple wasn't in that lineup and didn't even get a mention. Why leave out the other biggest player in the smartphone market? I find that a little suspicious.