This is a really good fare (partly because you can book solo), but I don't see how its of any use. The majority of these destinations are completely closed to pretty much everyone in Europe/UK and are unlikely to let any of us in before the majority of us are vaccinated - and this is doubtful at best to be complete this year. I'm based in the UK where the vaccine rollout has been pretty successful to date, and even with that, we are still unlikely to all be vaccinated till Sept/Oct.
If this fare becomes available later in the year for travel in 2022, I would likely jump on it, unfortunately 2021 travel wise is likely bleak. Further to this, I don't see SQ operating F till maybe Q2/Q3 2022 - if that.