Nope. My site doesn't use their API at all. Reddit's .json endpoints also don't require authentication (I don't actually use them either).
They actually banned the user agent, which I made unique and forthcoming (literally `web:reddiw.com v0.1 (by /u/dom96)`). I tested and changing anything in that user agent bypasses the block. So I could easily work around it, I am giving them a chance to unsuspend my account though.