Legally USCIS cannot issue more visas to DR if they cross the 7%. These are the limits set by Congress. USCIS can't decide to not enforce these rules.
I was listening to the Charlie Oppenheim chat about the latest bulletin, and he thought the fact that F2B did not retrogress for the entire year is good news for forward movement in the next few months. This should mean that they've gotten through most or all of the backlog created by covid. I also saw a post in reddit of an F2B with PD of October 2016 having an interview scheduled.