Right now the biggest difference between the left and right is structural.
The right is rushing towards the middle of their group. They insist that everyone toe the line on MAGA orthodoxy. Anyone outside of that (even more traditional conservatives) is driven out into the cold.
The left is casting as wide a net as possible. They’re trying to include as many groups as they can and basically grabbing up anyone who feels alienated by the right. There is no orthodoxy besides “stop the right at all costs.”
This is a problem for the left if they’re hoping to replicate Joe Rogan. There’s no orthodoxy to appeal to, no centre of gravity to rally around.