Given the context and how what Homelander did was probably just because he didn't care or maybe to create a situation to push the "Supes in the military" agenda and get the people to further help, what he did was messed up. But he make some good points as messed up as even thinking about doing that, let alone actually doing it, is. As for Queen Maeve's part in it, she should've stayed and died with them instead of abandoning them too.