Yeah, kinda. If you've got a frontend (e.g. phone app) and a backend, you still need to think about your upgrade scenarios. You probably still need some concept of versioning so you can keep track of keeping backend support for whatever apps will still be in the wild for a while.
I say this as a big fan of monorepos - they're great but they don't solve all problems.
For sure. You're not even absolved of deploying internal microservices in the correct order during certain classes of migrations, or even changing fields within a single service. Systems at scale are hard and require discipline.
I say this as a big fan of monorepos - they're great but they don't solve all problems.