But what churn? I started using Webpack, Express, TypeScript and React around 2013/2014. I still use the exact same stack. The only difference is that my config files are simpler now. React switched to functions/hooks but class components still work; all of my code from the beginning runs just fine and the professional projects I worked on continue to be developed.

I switched from classic .NET Framework because they deprecated WinForms and WPF was not usable and they churned the entire damn platform and replaced it with alpha-quality software. How many UI frameworks, and how much other churn happened in the past 11 years there? Way too much, everybody is so fed up that the past decade of my career consisted of rewriting desktop apps to this stack.

NPM makes it quite easy to publish anything and for others to start using it. Just don't, stick with the proven solutions. There's - adjusted for user base - the same or worse amount of churn on Pypi and Nuget. If you wouldn't choose a random library nobody uses in the C# land, don't do it in the Node land. At least the Node libs continue to grow, while the Nuget stuff continues to die.