Offit is very pro-vax, and I said that. But in spite of being very pro-vax, he questions some of the official recommendations.
I also am aware of many experts who are not so extremely pro-vax, but I don't post them here because you will reflexively say they are conspiracy theorists.
I don't know who the "many experts" are but Offit is as you say a "LEADING expert" and he cites the evidence, throughout that video, that show the benefits of vaccines. And "questions some of the official recommendations" is to say nothing, really. His disagreements with the "official recommendations" are on the margins. That's expected given the fact we're dealing with a novel virus, novel vaccines. But the core message of this video is vaccines WORK, are safe, prevent serious illness and death, prevented millions of cases of long covid. What's unclear is whether this for most people 4th shot is going to work to prevent serious illness in "healthy young" people.
If you want to support another opinion, you'll need to cite someone else. Just for example, your own video has Offit
recommending vaccines for very young children, and it's likely because he sees them when they are hospitalized and says avoiding that is safe and a good thing to do, even if the kids do not DIE.
FWIW, I listen to "LEADING experts" and Offit clearly is one. I listened to this entire video, that YOU posted, because I looked him up, he's a serious person, and I wanted to know what he said. I didn't "reflexively"
anything in response to your OP. What I also pointed out is he's no friend to your views that you've advanced here from the beginning. If you want to make some other point,
contrary to the expert you cited, then you can post those videos. But, for example, the I believe retired nurse in the UK who I know you've posted many times is not a "leading expert" on vaccines, so I really don't care what he has to say, when I can listen to ACTUAL experts like Offit.