There’s been enough sightings and audio evidence of Ivory Billed Woodpeckers in the 00’s and more recently that I believe it’s quite possible and indeed probable they are not extinct.
Of course, people overwhelm any area that are reported to be just to get a sighting.
A few years ago when we were out doing our monitoring, a Swallow-tailed Kite showed up, a vagrant in these parts. People ended up trespassing on a farmer’s land, and damaged some of his crops to see the Kite. He was furious and told them to get off his property and don’t come back.
About 20 years ago a bird expert saw one in a swamp in Arkansas.