I mean, the unit test one is open for debate for sure. First one can be more black and white. Third one is a grey area as well

There are a number of people who don’t respond well to “authority” and would immediately see you as someone trying to sabotage them and their position using your own position. For instance, this feels remarkably personal over something that is entirely a personal judgement. What is “small” and do both people have the same meaning? What is a unit test and can it even be tested? For example, you literally cannot test integration points of two systems in a meaningful way.