It's definitely time to rethink tyre design. With more capable bikes than ever being ridden faster on more demanding trails, Enduro bikes are often running dual ply DH tyres and (as stated in the article) WC DH races are being won and lost with dedicated DH tyres (even with inserts) failing regularly.
If the best mechanics in the world working with access to the best rubber (and technology) on the market can't keep their riders from flatting, then something needs to change.
Why can't we just make tyres a bit stronger? Sure, they'll weigh ~1.5kg, but surely that's preferable to constant flats? And as the article proposes, they could have built in inserts meaning less air and the ability to make it down the trail fast even if they did lose the air. Or no air at all and foam inners that approximated the correct PSI.
Running tyres at rock hard pressures to avoid issues just seems like a shoddy workaround. I'm sure WC and EWS racers don't run 40+ PSI. Or do they?