As much as I appreciate datomic, that's a poor conclusion to draw. git is objectively better than svn. Postgres is not objectively worse than datomic; there are things that datomic simply can't do efficiently.
if you go back and read the git vs svn flame wars back when it first came out, people said the same thing. it happens every time there is a paradigm shift technology. the reactjs flame wars of 2013/4 were particularly brutal as everyone and their mom felt qualified to comment. the key idea here is that, at scale, immutability is just better, at nearly everything