[mhh__]

Not sure.

I think a lot of this is just type of thing comes because with a monorepo you can actually see the problems to solve whereas you can easily end up with the same N engineers firefighting the same problems K times across all your polyrepos.

[bluGill]

You have different problems with both. Some problems are hidden in one, but there is no one best answer. (unless your project is small/trivial - which is what a lot of them are)