Prove it. Provide factual and credible evidence that Warren knew she had so little Native American ancestry. Prove that Warren knowingly attempted to gain any personal advantage from it. The bottom line is you're a bitter hack, butt-hurt because one of your idols was caught in yet another lie, so you compulsively lashed out with whatever counterattack you could come up with, no matter how dishonest and absurd it might be.
If you want to criticize Harvard for dishonesty, go for it. You've presented evidence that supports such criticism. You've FAILED to present such evidence for Warren, however. Maybe she is as dishonest as you insist. Prove it. Put up or shut up. Back your talking points with actual evidence.