Sure, but you'll have a hard time convincing people that is an effective alternative. How many people do you know who visit the official website of the White House to read press releases and memos? Does the average person know that the president used to give a weekly radio address? The medium of the message is just as important as the message itself.

I also believe AOC would be a nobody if she didn't have a Twitter account. She'd be the same as the other 435 Representatives who release statements on their house.gov website that no one realizes exists.

Edit: >"I doubt Twitter stops specific accounts from blocking other accounts."

This was actually a court ruling. I have no clue if Twitter actually coded this requirement on @realDonaldTrump after the fact. https://www.nbcnews.com/news/all/trump-can-t-block-users-his...