I can see why they might think that, tbf. Doesn't seem to work as well as Pfizer, even the country it originated in (us) doesn't give it to many age groups...
From an outside perspective, it might well look you're being palmed off with it.
(To be clear, we're in a world where something is better than nothing, and it seems to work... well enough, as long as enough people take the thing! But that's the danger of transparency too about things like the clotting. Sometimes, a bit of deception and concealment might be a good thing(!))