What if microservices are poorly architected such that they are actually coupled? It's worth thinking about such an outcome especially if microservices are being seen as a way of making dysfunctional teams functional.
You're right, I'm just saying that it's not always possible to see these problems in advance, and that it can be very difficult to try and get something done if you apply too many rules to a nascent system ( too many rules == design by committee ).