[laidoffamazon]

In the minds of conservatives and some leftists, the concept that Kamala being unpopular is so ingrained that they cannot believe that she would be the nominee no matter what the circumstances. In reality she's not much more unpopular than her President and would likely see a massive approval bump if the worst happens to the current POTUS.

Even without that, she's the odds-on favorite to be the nominee in 2028 by incumbency alone. Basically anyone that follows politics understands this, but the silly conspiracies are based on motivated reasoning.