I've never seen an article from a large company saying "we use multiple repos and it's great". Setting as all large companies seem to end up monorepo, I'm guessing in practice it is better.
I'd be happy to see a counter-example, but I've not seen one yet.
Amazon I think is the notable exception to the monorepo preference at large companies. But they have no lack of their own custom tooling to make multiple repos work.
I'd be happy to see a counter-example, but I've not seen one yet.