None of the player list - maybe Flower - would calculate the risk being good enough to take for the reward, if that makes sense.
You risk
1) a counterclaim
2) being boxed in as scum
3) having to be lucky
4) a very solid crafted fake that has little to no holes
There's a reason people don't claim heal type roles as scum.
It's alot of risk for essentially zero reward. You have to factor in all these little intricacies. While Yoho potentially could just say "fuck it we ball" to, but it's highly highly unlikely.
Even big daddies like Ratchet and Ultra and Poy don't tend to use this kind of tactic and they're obviously very good doing what they do.