Also, strategically unwise.
I wish people wouldn't have to strategically think about the posts they make with good intentions to improve the game. The Forum is not a game. This is exactly the kind of sentiment that gets people to focus more on the forums when it should be a convivial place.
This being said, I am certain there were good reasons to block hotmail, if only to avoid spam. There's nothing easier then to get a gmail address. I have five, including one exclusively for BM.