Yes, any plane that the President is on becomes AF 1, but how likely is it that it isn't one of the two planes commissioned as AF1 except in exceptional circumstances. My concern now is that we've been shown an older picture of Air Force 2 during Biden's VP days. I've found a pic that looks much like this one, and it is AF 2. I struggle with remembering that dates are important when researching these things. Someone posting an article or a pic out of context can cause confusion. Not saying this isn't a new pica, though. I have no idea.