Which isn't at all what we were discussing. And again not walking "just fine" if they're walking along and suddenly find themselves on the menu of a hungry polar bear out on the open ice.
We were discussing transitional forms.
An intermediate form is obviously not useless, making the idea that the transition from a full leg to a full flipper would involve a useless intermediate absolute hogwash.
Yet another strawman because this too was never implied, the entire point remains, and you're still flailing about like a seal out of water trying to get away from a polar bear, trying to convince us walking on flippers is somehow proof of evolution.
There’s a big difference between having a well established population where food is plentiful and predators are (relatively) scarce.
A transitional form which may be the first of it’s kind or one of only a few, doesn’t have the luxury of being able to get by like seals do.