This is so true that I can relate this myself and my co-workers. We work on javascript side most of the time and daily there will be set of developers talking about new bundlers, react features, hooks etc and they plan to use it in the production. The one thing I see and relate to this article is that, few team have used flow stating its a great tool for static typing in js world and now they are forced to change now to typescript. The same developers who introduced flow into the codebase, now in a position to say flow has huge drawbacks compared to typescript. Now they are moving to typescript, but who knows, typescript can change too. We never know. I always fight against these tech updates, without understanding its cost, but in most cases I fail to.