I don't see it that way. I'll repeat again.
Logia user are not able to Phase through attacks which they would normally do because Seastone Prevents that. The Devil fruit body still exist but its Weakened/Touchable/and disrupts their powers, That is the Effect of the Seastone. However The ability is not Removed.
Luffy would take damage from attacks his Usually Resistant with, just like how Logia's would when those attacks would usually phase through.
Seastone weakens Luffy's Defense's.
While it Removes Logia's.
Luffy Takes Damage, Just like how Enel did.The effect on Logia's seems to be much Greater, since their biggest defense is no longer apparent due to seastones affect.
I wouldn't go as far as to say they are in human form when in Seastone cuffs, because they are not. It is only the effect of the Seastone which makes them Touchable/disrupts their powers. Just like how Luffy is Damageable/disrupts his powers. But Logia's to a much greater degree.
I don't see what exactly the difference is with that despite terminology.
Logia's are in Ability state by default. They do not need activating because they have become their Element.
It's a different kind of "activating" from constantly willing to be elemental, I still believe my theory holds water.
I know it's all repeat but I have to state this since its always being brought up.
Take this for example.
Smash Luffy's head hard when his cuffed with seastone a few times and you could kill him.
Logias would be killed the same way because seastone removes their defense.
Yes. And as I see it their "defense" is their elemental body, which isn't "removed" per se but not active….
I mean, we both do agree that Logia's cannot phase through attacks at this point, so it is logical to assume they are not in their elemental form at this point. You are saying that this ability is removed, I say they cannot use it. Big difference? I don't really think so. Well, I'll stick to what I said since I don't see anything disagreeing with it, but if you don't want to believe it, that's only fair since beliefs are only that - we do not know as a fact. Neither of us.