Correct me if I am wrong about this (JW version of Trinity).
You are not wrong. JWs having been bashing Trinitarians on the basis of a doctrine that Trinitarians don't subscribe to for decades.
Christian churches that have lost members to JWs are guilty of not educating their congregations in their own doctrines. I know many ex-christians that never knew what their church taught about the Trinity, and have joined the WT church without realising their mistake.