> No. It's a hypothesis, because nobody had any explanation for why flu "disappeared". You may not prefer that particular hypothesis, but that does not make it unscientific or political.

I hypothesize the rise in these less common infections is none other than Santa Claus. You may not prefer that particular hypothesis, but that does not make it unscientific.....the fact that it's complete made up bullshit that, like the parent says of the "immunity debt" concept, "never had any science behind it.", is what makes it unscientific. That it's made up and was never shown by any evidence.