TBH, I feel like the TypeScript movement is driven mostly by junior developers. The software industry has always been like this; young, loud-mouthed junior devs come in thinking that they know better than all the senior people... They ridicule their elders who have an actual proven track record; they then proceed to push their naive ideas on the entire industry... 10 years later they (sometimes) realize how dumb they were (yes, I've been there myself) but by that point, the next, bigger batch of loud junior devs enter the workplace with even dumber ideas and drown out all the wisdom yet again... Again, the juniors with big egos, fresh out of MIT, think they know better than all the old dinosaurs and they perpetually keep destroying every chance of actually moving the industry forward... The cycle repeats over and over.