Can't tell you how that rubs me the wrong way.
That's a pussies way out. It sure as heck isn't a man's man way out.
My take on this is that if everyone who participated in these raids had to have their home addresses published in the local media within 24 hours, we'd see a lot of the nonsense portion of these raids cease immediately.
There is another (possible but unlikely) reason, which is that by wearing a ski mask they are protected from small debris like splinters. Though it would be completely unnecessary if they waited until the person was out of their house to arrest them.