I replaced my kitchen last year, went for laminate and was given same warning, mind you I had laminate for previous 30 yrs and would never have put a hot pan off hob directly on it so just thought it was one of these new warnings where you have to tell people everything like 'peanuts may contain nuts' sort of thing. I would always throw a tea towel under even things like cake tins coming out of oven, only makes sense!
I don't think any laminate old or new was meant to withstand that, you've just been lucky if you haven't damaged it in the past!