Rubbish reasons.
Trial of leaked fuel is only BEHIND plane, and NEVER INFONT. Moreover, it is on the Starboard / Right side only, while Port / Left side is NOTHING. So only Right-Rear of flight is unsafe for escape the rest of directions are safe to flee to safety.
Video indicated wind was strongly taking smoke towards rear of plane. So front and sides are clear of smoke.
Boring 777-300 got 8 emergency exits with a slide each to flee:
Ultra Ultra Stupid to keep passengers Endangered inside a burning plane. KNN!
Is PAP trying to burn a Boeing 777-300 with 200+ peasants to LKY side for 7th Month? Huh? WAF!?