They're fine, so long as you do not have to fork them. Very often we have to work on multiple submodules in parallel, to make that work we use the same name for

They're fine, so long as you do not have to fork them. Very often we have to work on multiple submodules in parallel, to make that work we use the same name for all feature branches, then our CI and tools understand that these unrelated branches in unrelated repos actually belong together, but I'd prefer not to have to do that. At least it taught me why so many big companies use monorepos.