I think that’s putting too much faith in people’s word. There’s a lot of self-delusion from cheaters who in reality enjoy using hacks because they want easymode and are afraid of risking dying. If an easily obtainable hacked unity client was available I doubt many cheaters after years of using hacked flash would decline it, and continue to justify it with something like “less lag”.
Although I certainly hope it reduces cheating, I think more likely is that would come from cheaters quitting, if they are unable to continue their ways. No loss though, assuming Deca can manage without their cash.