I've noticed that this incessant trendchasing is largely confined to web development, although it has spread a lot from there (Electron...)

To be blunt, I do not care how "new" something is. Newer is not always better, and change is not always good. Churn is not progress. Perhaps those should be the core values that developers need to be "indoctrinated" with, for lack of a better term.

Then again, I'm also probably much older than the average web developer by at least a decade and a half, and saw lots of silly fads come and go.