The headline is completely wrong. What’s eroding page builders’ dominance has nothing to do with performance and everything to do with Gutenberg being the default on WordPress.

It’s like saying, back in the day, Internet Explorer was the best browser because everyone is using it. Everyone was using it because it was included in every version of Windows since 95. Needless to say, Chrome changed all that.

Anyway, that all said, there’s no fighting Gutenberg. It’s here to stay and, thankfully, it’s also getting better and better with each release.