I love that Parcel is out, even if yes it is another bundle, because it helps highlight the major problem with bundlers right now: they (but especially WebPack) are a meta-platform over the web unto themselves and they encourage use of features that are not supported by the web platform, in a way that's not easily transformed into what the web platform does currently, or will realistically, support, creating lock-in.

Just as we're getting to the point where many of these tools should be optional because we have great modern JS and modules support in browsers, and many projects are already written in supposedly standard modules, many are blocked from actually shipping code that runs un-built on the browser because of bundler features like importing images, CSS, etc.