It's called desperation.
They have to give people SOME reason to take the shot.
If/when people realize that the injections don't do that either, they will have lost all credibility and good luck convincing people next time, although considering the lemming like gullibility and general stupidity of the human race, I'm not so sure ........
I agree that the clock is running out for them, but the alternative reason is to create justification for rounding up and killing those that refuse the slower death sentence of the jab.
Well, I think even the gullible will smarten up a bit for the next time — there will be a next time, unless they just go all Hitler all the time shortly—they seem to be trying to hide that reality behind the curtain.
However, as far as stupidity - well there’s an old saying, “you can’t cure stupid”. Ha.