I think Republicans are also generally disengaged. That's what enables them to vote for so much monstrous garbage; they don't pay enough attention to know what they're voting for. There are also plenty of true believers who really are christian nationalists, but for most people, if they follow the policy positions, they'd be Democrats.
So when it comes to the number of people watching a convention, the DNC sorta naturally attracts more people since the base is paying more attention.
Just 3 days ago I had to use the control panel to access the settings I needed to get my parents' printer to work right. Even tried to use the regular settings menu for maybe 10 minutes before remembering how to access the settings I needed. Here's hoping my parents never run into printer issues again (lol).
FUCK YOU, MICROSOFT!