That is very, very subjective > With multiple repos, modularity is the norm. It's not a must - you technically can have a repo depending on umpteen other repos

That is very, very subjective > With multiple repos, modularity is the norm. It's not a must - you technically can have a repo depending on umpteen other repos. But your teammates expect to be able to work with their repo with a minimal set of dependencies. You'd think so.. but no. I am working with multi-repo project where some repos have about dozens of dependencies, all developed locally, and interdependent on each other. Bumping the basic repo is very hard and frustrating. I miss my monorepo every day, where I could just make a PR and fix all consumers at once, where I had a CI which would test all modules at once.