Vertical Video Syndrome (VVS)? Wow, now here is quite a criticism recording videos vertically on smartphones.
20200227/https://www.youtube.com/watch?v=f2picMQC-9E
But, what does Wikipedia have to say? According to Wikipedia, although vertical video was initially shunned by video professionals, it later came to be embraced once it was discovered that the majority of video watching happens on smartphones, and vertical video viewing is the overwhelming preference on smartphones.
20200227/https://en.wikipedia.org/wiki/Vertical_video
Here is more great information on the rise of vertical video.
20200227/DuckDuckGo vertical video
20200227/https://www.forbes.com/sites/forbescommunicationscouncil/2018/02/02/the-rise-of-vertical-video-how-top-brands-are-adopting-a-new-content-format/
20200227/https://www.wyzowl.com/vertical-video/