After 50 years it remains non-intuitive and confusing and extracts a tax penalty far greater than its value add. Worse, the problem it claims to solve, "I have all my data in one database now let me transact over it", isn't viable and was never actually viable at scale.
Unfortunately this proposal doesn't understand the real problems with SQL (lack of types, lack of distribution, and no separation between the data write model and the data read model). It actually doesn't seem to introduce anything really new that can't be done using CEP Engines already.