This is an interesting point but imo ignores the facilities afforded by an RDBMS and possibly even misunderstands the notion of fully hosting applications on a RDBMS.
Some sort of check pointing is inevitable for recoverable state-less systems (that naturally react to a stream of data/queries) and that ultimately is delegated to either a streaming/messaging (e.g. kafka) or a database (of some sort).
Components of an application hosted in a RDBMS are tables, indexes, views, and code. The code is stateless — they’re just functions. Application state is in tables. Replication is supposed to handle your more hairy operational concerns. What’s the problem?