New families of DB technologies generally traded certain things off (like ACID guarantees and transactions) in exchange for other things like scalability or flexibility. When someone comes back, and in user space reimplements the things that the DB intentionally traded off, you get the worst of all worlds. It's quite a bit like flattening one end of a screwdriver so that you can make it work to drive nails. Yes, you can make that work, and in some rare circumstances where you're trapped on a desert island that might be your only option.

The rest of us will just use a hammer.