They're saying that microservices scale much worse than monoliths at the beginning, and need to reach a certain scale before they're worth the effort. The debat

They're saying that microservices scale much worse than monoliths at the beginning, and need to reach a certain scale before they're worth the effort. The debate around is usually around where that inflection point is, and to a lesser degree if there are other non-scale advances to microservices that might make it worth adopting sooner.