That quote convinced me that the goal of this measure is to prove us wrong for claiming that airlines can't make the onboard experience any more miserable. "Let's ban breathing, that will teach them!"
On a positive note, I'm sure Ryanair will soon introduce some kind of pay-per-breath scheme and as always, legacy carries will follow.
Seriously, I would love to understand where does this come from. Is it unions, or does management actually believe this is a good sane commercial decision?