@Layles0
Sorry for your situation, but what exactly are you disagreeing with in @Yossi8 's post? She is asking what we think about this new super flexible policy that Airbnb are promoting. Whether hosts choose to adopt this new cancellation policy or not would not make any difference to your situation as it would apply to future bookings.
Even if some hosts did select the super flexible policy, some future guests will still choose to book listings with flexible, moderate or strict policies, simply because they prefer that listing over the super flexible one. If those policies can be totally disregarded, then what is the point of having them?
Airbnb has set the dates for the COVID-19 extenuating circumstances policy, not the hosts. Take out your frustration with them, not @Yossi8 , who has nothing to do with it!
It is a shame your host was not willing to change the dates, but if the dates were in the near future, perhaps that is why. Most likely the dates for EC will be extended but, if you want your money back now, perhaps try negotiating with the host for a larger refund, e.g. 75%, so you leave her something to cover her costs (and there are costs even when an accommodation is sitting empty - mortgages, bills and council tax don't just magically pay for themselves) rather than demanding a 100% refund. You may have more luck if you at least appear to see it from both sides.
Personally, I would be more likely to 100% refund the guest who understands that I am losing my livelihood than the one who tells me I am 'losing nothing' and clearly has no understanding of the bigger picture.