“This PWA feature plugin is intended to equip and facilitate other plugins which implement PWA features,” Ruter said. “It’s not intended to negate any existing plugins with these features, but rather to allow such plugins (and themes) to work together seamlessly and expand upon them.”

Interesting that core developers are suddenly so interested in having different plugins work seamlessly together. After all, the Gutenberg architecture rejects that approach entirely. See https://github.com/WordPress/gutenberg/issues/4116

It's almost as if what is getting proposed for core is determined not by its substantive value but according to the whims of those with the power to commit it.