While I find media frenzies about pretty much any topic to be disturbingly shallow and mindless, I do recognize that on large social issues it can and often does have a very positive effect on general perceptions and in creating useful societal discussions. Ashe and Magic changed how AIDS got discussed and to some degree the amount of public funding directed towards treatment and research. Billie Jean King's match made a difference in the discussion of financial compensation in Tennis, Navratilova and others in the perceptions and discussions of lesbians, Sam more recently for gay men. And negative frenzies are also just as useful - Rice and Griner/Glory - for domestic abuse. The spate of police killings of unarmed men is forcing a re-evaluation of policing across the country. And Jenner is likely to have the same effect.
Not being a member of a marginalized group, it is sometimes difficult to perceive the benefits that accrue within those groups of a positive story, or a negative story about one's oppressors, but they are real. And the media frenzy can be a positive.
There were lots of comments here and on other boards about Griner publicizing her situation her first year out of college, and some of them were of the 'I wish she would just live her life and keep quiet'. In some ways that is the same reaction to Jenner, and to others that have publicized their 'minority' existence. But no one complains in the same way about the media frenzy associated with majority choices - like which Kardashian is marrying _____ or what some super model is wearing. They may complain about the coverage because it is so over the top, but not about the 'lifestyle' being publicized.