“The reason Trump is ‘impeached forever’ is so that the ‘Rats can argue that an impeached President cannot appoint a Supreme Court Justice.”
That may have played if there had never been a trial, but once Trump is acquitted the argument falls flat on its face.
The Rabid 'Ratz will use "Impeached" as a rallying cry claiming Trump was corruptly acquitted by the Evil Republicans for the benefit of their Corrupt Corporate Overlords.