I hear you. Mine's (mostly) all original as well and very true to the window sticker, but keeping it -- with true fidelity -- to the condition it was in when it rolled off the dealer lot requires risking whiplash in a rear-end collision. lol
If you're talking about the bezels/grommets at the top of the seatback, they can be removed without damaging them:
https://forum.ih8mud.com/threads/lseat-com-front-seat-upholstery.1284883/#post-14453326
2004-2007 Highlander 3rd row. They look a little goofy but they work quite well on my '75 (which has seats that appear the same as the OP's pics). They were cheap. And they're Toyota, to boot.