It’s trending because it’s so obvious that Trump’s mental state is deteriorating. This is being brushed under the rug by media owned by the wealthy who want a Republican president. The hypothesized plan is keep Trump’s mental condition hidden until after the election and he is in office, then they’ll magically realize he is not mentally capable to hold the office and pull the 25th Amendment and have him removed from office. Vance, who is by far easier to control, then becomes president with someone equally horrible as vice president.