The framing of the reasons people aren't adopting Blocks is quite ignorant of the realities on the ground. I wish the discussion would be more nuanced about the mismatch Blocks based WP has with an important sector of the WP Ecosystem.

I have a business building websites for small-mid sized companies and non-profits. I still use Classic Editor and build Classic themes, mainly because the results that can be achieved are a better match to the requirements of my clients.
That's particularly true when there is any complex added functionality that needs to be custom built. I'm fine with new tech -- I build APIs and JavaScript apps, too. But, for my market, the changes in WordPress introduced over the last few years totally miss the mark. It doesn't solve the business challenge.

I think Block stuff is great for a layperson who wants to build a personal blog etc..., but those aren't people who would hire my company. I need a platform where custom sites can be built without too much added dev cost. And, WordPress seems to have moved away from that market. So, I'm left researching other solutions that fit my market. It's too bad, because WordPress was pretty much perfect before all of this React nonsense.