You believe wrong.
A tyre that slides doesn't heat up and work as much than when it is loaded and have to exchange grip (rubber) vs load, otherwise said traction, if you had ridden on corner speed to the limit you'd know it wears the tyres a lot, while sliding it isn't as hard on the rubber.
When the tyres slides the wheel spins faster for the same speed and the load/heat is distributed on a larger area of the tyre than when it doesn't.
Then there is the little matter of doing this at lean angles further away from the edge than when you ride on corner speed where you need to lean the bike to max angle to gain time at the apex.
On a 157 kg+ biker it matters a lot, especially because to ride this way, you also need a chassis with more weight on the rear wheel, which increases the load on the tyre at maximum lean and speed, tyre edges are the areas where there is the least rubber and what goes first when grip goes down.
The Honda is not having as much issues with the low grip, they can manage the traction better, the temperature differences between straights and full loads are not as important as is the case for the M1 and they work the tyres a little less on corner speed.
Yamaha had always had tyre longevity issues with the M1 since 2011 for these reasons, last year, Rossi issues with front tyre grip during braking was due to the difference of temperature between straight and load and time to heat up the tyres.
Lorenzo had more issues with rear grip longevity, Yamaha racing comments all seasons shows this very well.
ps. During the commentary made at the BBC studio one of the guys said exactly that, i believe he was a rider, not Corser but another one.