"“The messaging,” says Stanley, “is essentially: You’re allowed in this space if you are white, slender, able-bodied and less than 45, cis-gender and heterosexual. And if you’re not, then you’re not welcome.”"
Kindly point to these specific guilty classes rather than quite literally accusing every person who participates in these of ageism, racism, and homophobia please.
Seriously, I hate how people generalize like that and are applauded for it... I know of few communities that are more supportive and friendly than these types. Heck, there's plenty designed for older exercisers as well.
She looks like a nice woman and I don't think she's consciously aware of how many people she just threw under the bus, but let's stop lauding those who divide and label everyone else.