Plainly, what's at issue -- if protection is needed -- is the act of journalism, not whether the person doing it is a journalist. We can all do acts of journalism from time to time. Most of us are not journalists except at those times. Congress is clueless, perhaps by design, on this issue.
Not that I have to worry. I'm not a blogger. I'm the publisher of an online magazine of news and opinion. You pesky bloggers can go to heck, for all I care.