Yeah, and this is probably sufficient for most common cases if we're being honest.

Immutability and bitemporal querying are nice features in Datomic, but the trade offs for most teams are an unfamiliar query language, unfamiliar runtime/hosting requirements, unknown performance footguns, little if any integration with 3rd party tools, and (until recently) licensing costs. If it were me, I'd probably deal with the headache or complexity of adding triggers/permissions and audit tables to Postgres to get that functionality if all of those other things are solved instead.