It is. The government have made themselves look tossers over this. For months the "experts" have said there was no scientific evidence a mask or face "covering" as they like to call them made very much difference.
It's the public not understanding the role of masks that has been the problem. I was trained as a nurse. The role of masks is the same as it always has been - they protect others, not the wearer (apart from N95 type masks, but I'm referring to standard surgical masks here). This hasn't changed and the scientific advice hasn't changed.
When they were saying masks didn't help it was because
-individuals were wearing them thinking they would protect themselves - they weren't. Masks are worn in hospitals to protect patients from staff. That's how they are being introduced in the community now - to protect people from the wearer.
-they were, indeed still are, wearing them incorrectly and doffing them incorrectly. The danger here is in creating a false sense of security. People tend to abandon all other precautions, social distancing, hand washing, not touching faces, if they believe a mask is protecting them. Wearing a mask under your chin, under your nose, with big gaps at the side or fiddling with it constantly and then touching it when removing it risks getting infected.
So, there's no confusion and the science hasn't changed. Masks didn't ,and still don't, protect the wearer. In order for masks to be effective everyone has to wear them to stop the virus from being spread. They don't protect the wearer.