That ruling is very broad and vague! I don't think killing Congress is part of POTUS's official job description.
https://www.pbs.org/newshour/politics/trump-isnt-immune-from...
Presumably the suit could resume once Trump steps down, but it might be wise for his democratic successor to offer him a pardon for the sake of an orderly transition
Oh absolutely not. Any democratic successor that did such a thing would face such an immense backlash from the democratic and centrist voting base that it would effectively throw their entire term away. No, most of the democrats see the pardoning of Nixon as a grave error and want to see justice for what has been done this term.
Biden’s term just started fine without any transition