Affirming Allah's attributes does not require understanding them through the physical properties of created beings. The reality of an attribute must be distinguished from a creaturely manner imposed upon it.
The error ascribed to the Mushabbihah is treating body and limbs, which are features of creation, as appropriate attributes of Allah. One denies these creaturely modes without denying the divine attributes themselves.
Thus affirmation of attributes and denial of resemblance remain together: Allah possesses His attributes, but He is not like His creation.