Yeah I think "frustrated" is the best way to put it. I wish I had more concrete feedback about why that is. It doesn't feel like it is ready to ship out users in Core to me.

Since nothing really will change for users once FSE is in Core, I think including the feature in 5.8 won't cause a major issues. But I'm struggling to understand the benefit of shipping an MVP like this. I'd have a hard time recommending to any user that they should actually use FSE on a production site at this point.

If it's about getting more feedback, then we should find a better way to solicit more users to try the Gutenberg plugin and try turning on the experiment, instead of shipping it in Core. It feels like Core inclusion will just lock us in to BC issues.