Unfortunately that wasn't clear. You talk about vaccines (in general), the modern anti-vax movement (in general) and so on, each time without qualification. If your points were restricted to one type, it'd make sense to prefix the word vaccine with that type. Especially because there really isn't a modern anti-polio vaccine movement is there? Pre-COVID it was really restricted to MMR.

Still, there's a secondary question here: how do we know polio vaccines are genuinely so different? COVID vaccines are one of the first mandatory vaccines to be developed and forced on people in the internet era. Thanks to that and the lawsuit that's forcing documents out of the FDA, the world has far more insight into the development and marketing of these vaccines than any previous public health campaign in history. What we see from this evidence is disturbing, and it seems to be a pattern, which raises the question of whether this is really the first time public health people have been misleading people about vaccine effectiveness and safety.

If it's not, then it becomes hard to say much with any certainty on the topic, as those sources control all the data.