We weren’t talking about the election or who to vote for, we were talking about his health. You can say that his health isn’t relevant to the question of who you should vote for, but you’re the one who brought that up in the first place. I’m just responding to a lie.

It’s literally just whataboutism, or a non sequitur. If a Trump supporter says something objectively false and I correct them, it would not a valid response for them to bring up problems with Biden in response to that. In the same way, if a Biden supporter says something objectively false and I correct them, then it is not valid to respond to that by talking about problems with Trump.

I’m allowed to keep you people honest, even if acknowledging reality is inconvenient for your narratives or goals.