The entire dissent was a solid read, if you're into that kind of stuff. Just another little choice quote which made me chuckle:
In sum, the majority today endorses an expansive vision
of Presidential immunity that was never recognized by the
Founders, any sitting President, the Executive Branch, or
even President Trump’s lawyers, until now. Settled under-
standings of the Constitution are of little use to the majority
in this case, and so it ignores them