It probably comes from the internet and how the web development media is heavily dominated by FAANG companies and trendy startups.
If your reference point is these companies and their developers, then it can appear like you're getting more obsolete by the day, since they're always talking about the hottest new tech and you're seemingly not using it.
It's turned web development and software engineering into a game of keeping up with the joneses. And I suspect just like with social media as a whole, it's made a lot of people feel like they're inferior to the rest of the population/their peer group.
But I've got an article about that planned at some point. About how the Silicon Valley focused tech media and internet has given people the wrong impression about what most such work is like in most industries.