They really don't, but I'll bite. The "relentless hard-selling" shouldn't be hard to understand when we are in the middle of a public health crisis that can be significantly mitigated through the thing that is "relentlessly" being "sold". Spreading awareness about vaccines is important, and there is enough misinformation and FUD out there that needs to be counteracted to allow people to make not just informed decisions, but decisions that are informed by facts and not nonsense.
I appreciate your reasoned response and agree with you. I would add, though, that there seems to be enough evidence that, at least for some people, that the vaccines can cause significant harm. Additionally, for many age cohorts, that risk of harm outweighs the benefits of the vaccine.