I, too, hate vertical videos. But I do see the point if the only people watching will be watching on a phone, and they will be holding it vertically. I also hate the way people tend to crop things when filming and photographing. I've been a photographer since I was about 6 years old and my dad showed me how to develop film and make prints in the darkroom he built into the house where I grew up.
But I will say that modern cell phones have put decent cameras into the hands of almost everyone, and as a result, we get to see photos and videos of so many things that we'd never see without them. And the automatic focus and exposure, and the more modern AI type camera features mean that virtually anyone has the ability to make those videos and photos turn out reasonably well. Having that technology in hand doesn't mean that everyone becomes a good photographer, but it at least gives them a chance!
The same goes for security cameras. We get to see a LOT of interesting things these days because someone's security camera captured it. When I worked as a photographer for a newspaper back in the '70s, we had to carry lots of film and spent quite a bit of time developing, printing, and halftone screening every shot that needed to be published. Now, things are quick and easy. AND, almost everyone can get those on-the-scene shots for us, even if they're being chased by a bear or dodging debris from a tornado at the time!