brilliant, so your argument is that any attempt by facebook and google to check facts is actually all about them manipulating them - that's the type of circular argument that suits conspiracy theorists very well: they can't be trusted therefore anything they do is untrustworthy
so you've been exposed many times by people like Letters - so does that mean we shouldn't trust anything you say?
talking of which how about going back to yuor own claim that the study said that: "Wearing the types of mask most people are wearing doesn't make any difference at all"
even the bits you yourself have quoted contradicts what you are wanting it to say: "However this is not proof that masks don’t have a significant effect, as the study didn’t look at whether mask-wearing protects others by stopping wearers from exhaling the virus."
in other words they are saying that masks could still be effective because the study didn't look at whether masks protect others, which is not what you are claiming it says
i belive this is called 'fake news'...