Being against lockdowns is harmful to Facebook, because locked-down people consume more Facebook. That's all Facebook really cares about, and everything else is just justification for that.
Do they?
If it's all about the money, my guess would be Facebook has lost out on ad revenue, because a lot of the ad payers don't have customers.
There's still a third possibility, they're making some moral decision, although that's hard for me to believe given the company's past decisions. Maybe the lost revenue has made them make a moral decision?
It could always be a combination of these reasons, and I'm sure there's others I haven't accounted for.