Transitional forms are not fully formed because they are intermediates.
You think you are being clever, but actually you're only exposing who ignorant on the theory you like to argue against.
As
@Polymath257 said: ALL life is "fully formed".
An intermediate is not "half an X".
An intermediate is simply a
species that has characteristics / traits of both its ancestral species as well as its subspecies.
Like Tiktaalik. It's basicly a fish with limbs and a neck.
But it's a "fully formed" species in its own right.
There's no such thing as "half a species" in evolution.
That's just creationist propaganda.
Learn the science before trying to argue against it.
Continuing this argument is an exercise in futility, because you are not arguing against evolution theory. You are instead then arguing against a misrepresentation thereof. Even if you win the argument, all you would have accomplished is debunking a false version of the model.
The actual model will be left untouched.