I'm the team manager at a WordPress theme company and we've spent the last year developing a collection of blocks exactly as described in this post. The idea was (and still is) to bring most of our users to the block editor. Because we like the block editor. They still want to use our themes but they need a set of boring but flexible blocks like the ones found in popular page builders. As a theme developer it's impossible to rely on a 3rd-party block collection. You need your own boring collection. So you can keep up with the countless changes in the core editor.

And then, after the crazy hours that we have to put in order to keep up with the latest version of the block editor, now we have to read posts like this.

Thank you very much.