"the science changed"

Uhhh no. We've had all the data the whole time. We've been saying the PCR tests are bullshit, we've known the masks are bullshit. It's all bullshit.

Now "masks don't work* for omicron". Oh, did the virus change size? What changed?

The narrative changed because it's untenable. Unfortunately you just scream SCIENCE! at people and most are stupid or lazy enough to fall in line.