PCB using FR-4 material, this can help withstand high temperatures
So what, if you set fire to it the thing will burn for longer....
Or just that you get more magic smoke when the caps go ?
PCB tech is fine IMO, the same with surface mount.
I have yet to hear of things going dead quick because of the SM stuff letting go quick ??
Or what they really are trying to say is that they got stung with a load of gank parts first time round and now have sourced some better kit.