There are also pushy managers who would insist on slapping another function onto an existing microservice and then cut time spent on writing tests, just so that

There are also pushy managers who would insist on slapping another function onto an existing microservice and then cut time spent on writing tests, just so that he can meet his targets and get a bonus. Then the app with time will start to perform worse and worse but when it happens, the manager will be long into a new gig and the developers will get the whipping. Then they'll get new developers to fix the mess and once it gets stable, a new manager will start to insist on adding that function to an existing microservice... and the cycle repeats...