Because the media, which supplies political "information" to the masses (a) wants to sensationalize things for viewership/ratings and (b) is generally owned by extremely right/conservative/Republican entities and will not allow it to be a fair representation between the two candidates.
And more than that the MAGA side doesn't campaign on or care about political policy because their base doesn't know or care about policy, they campaign on hate and dirt and smear. So you could explain all the awesome policy of the other side until your throat is sore, they won't care because policy is not their concern.
It's funny to see the latest moanfest from Trump, claiming no-fair because he spent $100m campaigning against Biden and now that's all a waste. That's the thing. He/they aren't campaigning for issues or policy, they are fighting against an individual. It's all they know how to do and all their base really cares about.