First, don’t call out individuals on the forums. Guilty or innocent, it’s not the job of these forums to pass judgement. Leave that for 343i.
Secondly, 343i & -Yoink!- are well aware and have taken precautions to ensure that cheaters or boosters will not be receive any prizes. In fact, they’ve started it several times and even responded to posts like this on the forums reiterating that. I know the leadboards don’t necessarily reflect that, but rest assured, cheaters will be dealt with.