To say mask-wearing is "not justified by science" is just plain wrong

Air Canada, for some reason, believes that the federal governments highly suspect decision to do away with the requirement for masks on planes and trains is "acknowledging that air travel is safe and that the measures were not justified by science". 

Cobblers, I say. The government has made a purely political and economic decision and kowtowed to the anti-masking, anti-vaccine lobby. "Science" doesn't come into it. The "science" is that masks are one of the few measures available to us (and the easiest one at that) that can be effective in reducing the transmission of COVID-19, which is still rampant in Canada and in the rest of the world. 

Just because they think it benefits their own commercial interests (a dubious contention in itself - many people are now less likely to fly, not more) does not mean that it is the right thing to do.