It doesn't matter if you have a mono-rep or multi-repo, you will need engineers on tooling to make it work if your project is large. There are pros and cons to both multi-repo and mono-repo with no one right answer (despite what some will tell you). They are different pros and cons, but which is best depends on your particular context.
Yeah that was my point. In the end both approaches can be fine (depends on your context). The real difference is that whatever choice you take, it will need the right investment in tooling and support.
