I mean if you just think about it a little RHCP makes a lot of sense by JoJo standards. Damage doesn't affect the user because the stand is made of electricity (think the mist stand from Stardust). If the stand is able to just reform then damage has never transferred to the user.
As for recalling it, it's not really been fully stated yet but not every stand can just be recalled at will. Some stands, like Oingis book for example, exist as physical objects in the world. Others, like Star Platinum, are just astral projections so they can be recalled whenever. RHCP is a weird one since it is both a projection and a physical object. Since that's the case, that he can't recall it at will makes a lot of sense. I mean, if he did, would he not be electrocuted since he's pulling a high amount of electricity to himself?
Stands don't follow consistent rules that can be simply written out. If you want you can go stand by stand and analyse it, but everything goes much smoother if you can just accept things as they are.
I mean, as pointed out before, Heavy fucking Weather.
