> Also, you may be forced to use language features you don't

This is quite important and often overlooked. An annoying fallacy is that people think some features are optional, but once they get heavily used, they aren't anymore. Often they quickly become an requirement and if you don't follow suit, your code is legacy or you are an idiot. But well, I guess I create legacy code upfront and the cargo cultists create modern code that turns into legacy next day.