This ruling was entirely correct and removed an unnecessary hurdle for discrimination claimants. The imposition of an added standard for a certain class of sexual identities was blatantly discriminatory, creating a two-tiered justice system. No one is "more equal" than others under the law, and the court should not try to be an arbiter of identity in these matters. All that is asked is that the law be applied fairly.
Racism, sexism, and homophobia are all still deeply entrenched in the U.S., and the naive colorblind dogma does not take into account the fact that discrimination against minorities far outweighs the rare cases against majority groups. Institutions also need to be protected from Trump-motivated bad actors who attack diversity initiatives using such claims as a cudgel, as this ruling now opens the floodgates.