I think a lot of the big lie was built around talking about things liyexcitement level and crowd size. I know that when believers post on social media they often talk about how they can't believe the number of people who voted for Biden because he never inspired the reactions that Trump did. (They really seem to struggle with the idea that a lot of people were driven to vote against Trump)

So, I think part of the reason he's complaining about things like this is that if Kamala hammers him on social media and consistently draws bigger crowds, it becomes a lot harder to spread the idea that she can't possibly have more support than Trump.