No. I think it's just the idiotic notion that as soon as a new version of something is introduced, all the versions that came before are suddenly worthless garbage.

Here is a non-photographic example. In May of 2019, I bought a new vehicle made by an American manufacturer. Of course, my inbox was immediately flooded with emails from them about all sorts of things. The goal was to make sure I felt good about spending all that money. Before long, the tone of those emails shifted to trying to convince me to "trade up" to the "redesigned" 2020 version of the same model in order to experience all the advantages it offers. Are there improvements? Possibly, although none that are obvious to me. What is true is that the 2020 model is significantly smaller. This is a big deal, because the 2019 is just barely big enough.

So as far as I can tell, the only ones who would benefit if I did trade would be the manufacturer and the dealer. Not interested.

Cameras are exactly the same. There are probably some photographers who would benefit from the switch. There are probably more who have the illusion that they would benefit. My own sense of reality tells me I am fine staying where I am and either hanging on to my money or using it for something else.

Let's face it. Most "photographers" need a lot more than a new camera to improve. Personally, I need vision that is not declining because of glaucoma. Some on this site need expanded imagination. Some need a better realization of what might be interesting to others. Some need a better understanding of basic principles. Some do need a camera that is easier to use and to apply those fundamentals. Very few really have a specific need to get rid of a mirror.