That feeling is mutual. I very much prefer boring Java or .NET developers who are all supposedly stuck in the 90s to hipsters chasing after the latest JS fad of the week.
Me too! But you're building a strawman. Kotlin isn't a JS fad. It's been around for many years, is the default language for Android platform and the de facto standard IDE for Java, backed and used by Google, JetBrains and many many others. But sure, everything that isn't what you've been doing since the 90s is a fad.
