A side topic: this is really not something to be proud of. There used to be more people than quantity of work in Uber and engineers fought for credits by building bogus decomposed services, and the sheer number of services seems indicate it's still so.
I’d also be curious if the 50m lines of code included generated code.
Taking an existing service and making it into 2 new microservices is a "thing you did". Suddenly, you have "impact" and can claim the new service as "yours". Everyone wants to be a king of their little kingdom.
We’ve started to use it (temporal) a bit for general automations, and it’s pretty great. Monorepo with a lot of different activities (“microservices”) makes sense.
The activites are orchestrated in workflows (much like DDD “sagas”) and scheduled via temporal. This gives awesome introspection and observability.