@Anonymous,
As of now, my calendar hasn't been blocked, my listings still appear in search results, and they can be reserved. @Lisa723 also said that she wasn't going to sign up. I must admit that it has been a very difficult decision for me. Since I cannot open my guesthouse to most international travelers, we are receiving no income for that property, which is a purpose built short-term rental business.
Although signing up for the policies would have little impact to the way that we host, because we share almost no indoor common space with guests, just the hallway to the laundry room. Since we installed washers in the guest suites, I won't be doing laundry for most guests during their stay, and probably would have almost no interaction with them after check-in. However, it literally brought pangs to my heart whenever I thought about giving in to Airbnb's over-reaching policy, and bully tactic to make hosts sign up for it.
I've told @Ann72 that it's possible that: Airbnb is giving a grace period to non-homeshare spaces; a significant amount of hosts didn't sign up, and could impact inventory levels; and/or, Airbnb is so focused on the upcoming IPO that they don't want to generate more interest/bring into question their terms and conditions.
I've been working on thekeepcool website, updating the guesthouse listings on Booking, and am presently working on Vrbo updates for all of my listings. I have been transitioning to longer-term stays in Atlanta, and will try to attract similar stays in St. Lucia (guests that have been in the region for at least 21 days or have completed the 14 day quarantine can stay with us).