That link reaffirms that masks reduce particulates by some amount and offers no evidence this impacts the spread of respiratory illnesses.

lol it literally says that masks reduce the spread of COVID. By all means, provide some evidence to the contrary

The most obvious and trivial answer is that countries implementing mask mandates have seen COVID become endemic. That masks provide 'some' impact is obvious. That said impact is negligible is also obvious. We are still waiting, years and years latter, for that curve to finally be flattened.

So no data, cool. I will no longer believe Johns Hopkins and will instead defer to you for medical advice because obviously you’ve made a seriously compelling argument.

Curve flattening was about trying not to overwhelm the hospitals.

You're making a basic logic error that I've seen so many times from your camp: "if it doesn't work 100% it doesn't work at all". Why do you think this is a logical requirement?

> That said impact is negligible is also obvious

No, it's not obvious in any way. Please show us.