IE an abort commenced at 45 KIAS on runway 34L at YSSY doesn't need max braking, spoilers (if you fly a type that requires they be manually extended), and max reverse - but I'll at least apply/select all of them - so it's the same process every time
Reverse is useless at 45 knots so it makes no sense to use it simply because it's the same process every time. On top of that you, are asking for a potential compressor stall at that speed with full reverse; especially if a strong crosswind is present.