Yes, I stand corrected. Aftwr researching it further, appears there is a xlause in their statehood documents that allows Texas to divide itself into 4 separate states due to it’s size which is where the misconception is derived from.
Actually, any state can do this. New states may be formed out of an existing state provided all parties consent.
no new States shall be formed or erected within the Jurisdiction of any other State; nor any State be formed by the Junction of two or more States, or Parts of States, without the Consent of the Legislatures of the States concerned as well as of the Congress.Article IV, Section 3, Clause 1