This is just the same bs that we get from the "real left feminists" who seem happy to play middle school mean girls games anyone who doesn't accept their political leadership.
There are huge disagreements within feminism about what it's political principles are, what is the right view on issues, how to engage women.
The fact that a tiny group of, typically, academic feminists have tried to say that on;y approved people on the left can use the term is just another kind of power grab.
Their vision isn't somehow defined by some feminist politburo, by recieved tablets off the mountain, or vapours from the feminist godess. Because those things don't exist.
This is not a unique situation for a political movement, you will find differernt schools of thought among liberals, conservative, Marxists, neocons, fascists, the Religious Right, the religious left... it's actually the norm.
I don't have much time for gender ideology because it's dumb, but it's not wrong because it doesn't follow the rules of Real Feminism.