I’m afraid you’ve missed the point entirely. Medium’s logo is a green M. That green M does not say anything positive or negative about LGBTQ issues, gender ideology, or any other issue. It only says, “This is Medium.” The rainbow M, on the other hand, makes a definite ideological statement.
I am not demanding Medium ignore Pride Month. I am requesting that they not make such statements universally across all of their users’ content. If they are not willing to do this, if they feel it is appropriate to promote whatever issue and make whatever statement they desire using their users’ published pages as a platform, then I think it is time to seriously consider moving to another medium (pun intended) that has more respect for user autonomy.