Your periodic reminder that if your conference doesn't take a strong stance against COVID with masking precautions, vaccination requirements, and on-site temperature checks, and doesn't have an online component then folks like myself aren't coming and aren't participating.
You've basically told immunocompromised folks that we're no longer welcome.
And frankly I don't have time to navigate whatever weak-sauce placations you might offer up in hopes that the virus might stay away. This is a modern disease, not an old-testament ritual performed in the hopes that God might spare his people.
Simple.