Whenever things like these happen, of course you should think if the effort ripping off Webpack is better than suffering possible losses of productivity in the long run. But for majority existing projects I'd bet the projected cost of lost hours vs the cost of changing your bundler would result in net-loss.

And as an observation, I feel programmers often have a habit of lamenting loudly about other people's mistakes while not saying a word if they make an error of their own. Maybe they have a psychological need of maintaining a feeling of superiority about your own abilities, I don't know. Just something I've noticed during my years.