And let's be honest: if you're worried about lap times, the flappy paddle gearbox is faster. It will never replace the joy of rowing your own gears or nailing a downshift, but it's almost certainly a win in terms of reliability under real world drivers and pace under all drivers.
There's not a chance in hell I could ever learn to switch as fast as a flappy paddle in a modern supercar.
You gotta master the heal-toe brake double-clutch downshift going into a turn, or you're not a real driver.
I owned an '86 Subaru BRAT with an EJ22 swap and a cranky transmission (heel-toe and double clutching required down into 1 and 2), and truly nailing a smooth 3-2 downshift with the transmission shifting sweetly into 2 was an occasion to be celebrated. I am 100% confident that I'd nail it less than 1/10th as often in any modern supercar with a manual.
I've also driven an E36 M3 (US spec) and a 458. I know I lack the training and experience to stay ahead of either of them on the limit. I suspect most other people do too.
I enjoy practicing double-clutching heel-toeing downshifting. Paddle shifters, phooey.
Technology has moved on.
A number of technologies have been banned from F1 because they were too good. (Other sports, too, like aluminum bats in major league baseball.)
When an AI bot is driving the car, are you still going to watch F1?
Well, how far do you want to take that argument? One could argue the last time high performance piston engine engineering actually mattered was in the aero engines of the 1940'ies. Then you had the might of nation states pouring resources (directly, or indirectly through buying lots of them) into making the absolutely highest performing (in terms of power/weight) engines. With some consideration to reliability, of course, and relatively little consideration to cost. Producing masterpieces like the mighty R-2800.
After that the serious development money went into turbines. Sure, piston engine development didn't stop, but the development going into "performance at any cost" was a pittance compared to other priorities.