A Facebook account is NOT a platform requirement. But you might want to consider one…
A common understanding is that fewer people are using Facebook nowadays. However, it is still the platform most used to share campaigns and post ads. Even if you are not a campaign owner, you can still help those campaigns you support by sharing them with your own network, wherever that may live. So Facebook is still a handy tool to have.
For more information on sharing campaigns, check out this article.