The real problem I have is to say tires chunk that's just how it goes. Engines blow up too, it's part of it sure but they as in this case Yamaha don't just accept it and continue on with suspect engines they fix it. Michelin need to fix it.
Totally agree Birdman but I will give Vudu a little here as he is correct, there is normal standard tyre wear that can occur when a tyre operates outside it's primary design role and purpose.
With normal tyre wear (as you and all but one other realise) causes a degradation of the tyre and the subsequent performance on a gradual basis across the tyre life. Sure, when conditions deteriorate (or track conditions improve as is the case with wets), that tyre wear may accelerate, but it accelerates gradually in a manner that the rider can often adjust to and thus manage (ie. exiting turns more uprioght etc).
What we saw on the weekend with the three cases (Dovi, Ianonne and Lorenzo) was a tyre failure not tyre wear. It was no different to the rear tyre failures from earlier this season, and no different to the failures of PI a few years back, and no different to the few failures that I recall Rossi experiencing (both at Ducati and on the Yamaha).
A failure is sudden, it catches the rider by surprise and generally means tyre chunking or imploding and often may result in a brown strip moment for the rider.
To use MV's insistence and to add to your analogy, were the rear tyre issues of earlier this season with the Ducati tyre failures or standard tyre wear?
There may well be a retort that the tyres were under inflated but it has also been reported that they had been inflated as per recommendation but still failed, oops, sorry wore out as they should.
It is indeed an interesting concern that this season has seen serious rear and front tyre failures under different conditions and one does indeed hope that Michelin and DORNA get the issue fixed before we see tragic circumstances (and I include DORNA as they are likely involved in construction discussions to ensure that the show remains, the show they want/need)