Definitely a coincidence. While the current polio outbreaks were caused by a badly mismanaged and failed vaccination campaign pushed by the WHO and the Bill Gates Foundation out of an arrogant sense that vaccines were magic, the vaccination campaign in question was the polio one in the third world that was attempting to eliminate polio and the problem actually predated Covid (there were articles about it back in 2019, it just took a while to reach western countries). The Covid lockdowns everywhere certainly didn't help though.
(The problem was that they wanted to eliminate polio, but the vaccine itself had become the main source of polio outbreaks and the polio variant causing them didn't exist in the wild anymore. The only purpose of that component of the vaccine was to protect against outbreaks caused by the same component of the vaccine. So all the experts and organisations involved in polio eradication decided that if they dropped that variant from the vaccine everywhere at the same time and did a little bit of targetted vaccinuation to mop up any remaining outbreaks they could finally eradicate it for real. There were a bunch of optimistic presentations and papers expositing on this. It failed badly.)
