I've read a couple of the majority opinions and dissenter opinions
The president already had presumptive immunity for official acts. This basically just reinforces the precedent and sets up a framework for determining official vs unofficial.
Nothing about this ruling fundamentally changes Trump's position except that he has the option of claiming he was "acting officially" for example during Jan 6th. Then it will go up to USSC and they will determine the specifics case by case
Why does it not matter as much as it seems? Because a president already had presumptive immunity for official acts before.
Yes, it's important. But it's not the end to democracy. It essentially creates a check against the executive branch by the judicial branch. And honestly, I'm OK with that considering how powerful the executive branch is.
Biden's campaigners don't care about any of that. It's their job to get people to vote. They don't care about the truth. I get it, I would do the same thing in their position.
Everybody talking about replacing you because of your terrible debate performance? Blast the "End to democracy" tagine as loud as you can so that news cycle changes.
It worked like a charm, I think it was a good strategic move