"Not everything is so very black and white" .... very true, which is why the full story cannot usually be gleaned from merely an eight-second soundbite. More often than not, further explanation is necessary, making the checking of facts a bloody good idea!
The orally administered (or live) polio vaccine does not pose a threat to those who receive it (as might have been supposed from some of the reports being circulated). Rather, in rare cases, it has led to infection amongst the unvaccinated.
https://www.nature.com/articles/d41586-020-02501-3
It is only an issue in populations where the level of immunisation is either low or non-existent.
In other words, the battle against polio is a two-step process. Step One is the eradication of the "wild" polio virus. Step Two involves the continuation of the vaccination process to cover the entire population - so that mutated strains of the attenuated virus used in the oral vaccine don't get a hold.
(During the fight against any killer disease, arguably the greatest obstacle of the lot is complacency: i.e., getting the beast down on the floor with one's foot on its neck, then deciding "She'll be right, Mate", letting the thing go, and thus having to start all over again).