[Soinou]

I'll be speaking for Webpack, since it's the only one I use for the few internal applications at work, and I've never really used Parcel yet.

Configuring Webpack is still pretty bad. If the zero config works for you, great. But if you need to configure it yourself, it's really verbose, it's really complicated, and the documentation is a bit thin.

SplitChunks in Webpack are like black magic, they work but you don't have any idea how, and when they don't work, you still have no idea how. And you don't know if it's because you didn't configure them properly, because you don't know what is configuring them properly, because the documentation on them is so bad.

Maybe I'm just bad at configuring Webpack, but I still don't understand how many things in Webpack work, and it's given me a lot of headaches, even with the "zero config" Webpack 4.