I do remember Trump from the 80s and 90s, and you can easily find examples of him from that time on video. He did seem to have a quieter demeanor, but then again, when he is interviewed one on one now, he's quieter. I think his people like the exaggerated shouting and haranguing he does when he's on stage, or when being interviewed by phone, like on OAN and Fox and AM radio; being on the phone tends to make people louder than when they are one on one with people. Maybe that's how the red hats are exposed to him, exclusively. Maybe it reminds them of the authoritarian figures in their own lives that were more common fifty or more years ago, and they respect and fear and admire that.