Yes, I still believe that monogamy is inherently unethical, as it involves one partner having the power to concent for their partner. Also it is the norm and state/religious enforced. Some norms are important, but they should at least be questioned rather than accepted uncritically.

You are free to disagree, but I am happy if at least you honestly questioned it. If you do so and still disagree, then that’s fine.

no norm should be accepted uncritically.