And face it, Threepio was pretty comic in the OT.
Face it , Threepio’s comedy in the OT was actually funny and played off the other characters in service of the story .The prequels had him resorting to bad puns and quips …" I’m beside myself ." " This is such a drag . " , " What do you mean naked ? My parts are showing ? Oh my !" etc I did like some of the early episodes of Clone Wars where Threepio was teamed up with Jar Jar though , as he was annoying ,even to Threepio . I felt that show handled Jar Jar better than the films overall .
I felt Jar Jar’s humor fit with the story. And yes, Threepio in AOTC was really bad. Several of those things you quoted are from the head switch sequence. Take that out and the rest of his lines fit with the OT, but those are as way off as the sequence they are in.