I do not understand the rule at all. F1 is all about safety lately - with the mechanics unable to cheer at the side of the circuit - and they remove tyre blankets? Removing tyre blankets is in my opinion even more dangerous. Imagine de Vries coming out of the pits with fresh slicks and missing the first corner because his tyres are not at temperature - with Alonso next to him. Then his career is definitely over.