Thanks for the post. All the comments here sum up the frustrations of the community.

Gutenberg is trying to solve to many issues for different type of people: end user, developper, designer, and so on. It can't. Please go back to original WordPress philosophy and like others theme builders ship it as a plugin. Stop reinventing the wheel a keep core light.

As a front-end developer since a decade, I prefer creating themes from scratch without Gutenberg because it's not viable for businesses and we don't need it to achieve our complexe goals.

Thanks for reading.