There is a reason why frameworks such as Next.js, Reframe, and now this one are being used.
I'd actually say the opposite, it's tools like Webpack that don't have enough abstraction. I don't care how source maps are being generated, why on earth is it a good idea for Webpack to force me to dig into that? (If at least Webpack's default source map config would work out of the box but it doesn't.)
Parcel hits the right abstraction level much better.
Disclaimer: I'm Reframe's author (https://github.com/reframejs/reframe).