I hear that a lot, but I got about 7-8K miles out of my PP rear tire on the R6 and I have about 5k miles on my front with plenty of life left. That includes 7 trackdays too.
Tire wear is related to heat, and if you keep your tire pressures high (40 rear, 38 front) your tires will stay cool and you’ll get a lot of miles out of them. Check your pressure before every ride.