Irresponsible is a bit rich, I have no responsibilities owed to twitter. Perhaps ignorant would be fair. I am not exactly floored by those releases compared to

Irresponsible is a bit rich, I have no responsibilities owed to twitter. Perhaps ignorant would be fair. I am not exactly floored by those releases compared to the team size, but it does show they're not twiddling their thumbs. As mentioned in another comment, they might be a bit inefficient at the size they are now, and the responsibilities they have to internal operations aren't particularly obvious to outsiders.