From the numbers I saw, the problems with AZ seem to affect only a very small portion of people.
It kind of feels like people are only now reading the note that comes with a drug. And we are using these drugs on millions of people, so yeah even the one in a million complications will start to show.
It sure seems that AZ is singled out on that so. And I really wonder why. Because it sure is getting into dangerous territory by now that we are artificialy limiting our vaccine availability.