Is a shapeless creature even logically coherent? Intelligence needed for math requires making distinctions, and distinctions imply structure, and structure is logically incompatible with true "shapelessness".
Do you see how your argument is self-defeating?
According to logic that humans have developed, there is such thing as a "shape". But Western philosophers have pondered the innateness of a "shape" or an "object" from very early on (Plato, through Leibniz, beyond).
"Shape" and "logic" are both human constructs articulating "structure", another human construct.
A shapeless creature doesn't need to be "logically coherent" to exhibit intelligence; logic, truth, and structure are features that have emerged from human intelligence. I wouldn't accept the argument that an entity must exhibit the same features to qualify as intelligent simply because humans have.
There is such a thing as "structure", of which "shape" is an instance, yes.
> "Shape" and "logic" are both human constructs articulating "structure", another human construct.
Structure is not a human concept. We have particular conceptions of structure, but structure exists, period. 0 != 1, they have different structure. This is indisputable.
> A shapeless creature doesn't need to be "logically coherent" to exhibit intelligence
If you think that reality does not have to be logically coherent, or that that does not necessarily imply that any creatures within reality have to have a logically coherent description consistent with coherent natural laws, then you're talking about a fantasy world of your imagination and I don't think there's anything further to discuss.