Yes. I have been promoting this message nonstop for the past few days. I created https://www.maskssavelives.org/ to help promote the benefits of mask-wearing in reducing COVID-19' virality.
That's painful to read, it does not address the blatant lack of causality demonstrated in the FT chart with masks / no mask regions. You can't make that claim at all. If masks were that effective, SK and other countries wouldn't have engaged in their massive testing, quarantining programs at all.