Am I the only one who'd be very ok with AIs replacing referees?

It could probably work, but I look at the officials sorta like Vanna White on Wheel of Fortune. She has gone from turning the letters, to touching the letters, to now just standing there as the letters light up on their own. Pat Sajack is retiring and she’ll still be on the show. Over the years, there were many changes to the game, and she’s kinda like the last standing piece of the old game show.
In that same vein, yes, technology can do everything the officials do without human error; however, over the decades, the game has changed tremendously: rule changes, new uniforms, new stadiums, updated technology, expansion teams, and the list goes on, and the officials are kinda the last fixture of the old NFL.
Just my 1 cent.