I agree this debate is already over. However I think this simplifies the issue enormously and makes it a lot more likely that general public opinion can be mustered against animal testing. If you tell the tell the future adults of this world that animals like to play and have fun then ask them whether it is right that animals are experimented on then the answer, for good or for ill, is going to be a resounding no.
Is there debate about that? I suppose I took it as a given, hence all the efforts people go through to treat lab animals humanely.