The 30-49 group, a mix of boomers and gen x, is at 39%, much lower than the 18-29 age group that same year, and also significantly lower than the 65+ group in 2019.
Which is a good illustration of the two important trends: every cohort has moved towards gay rights as they've aged, and the younger the group the more they've favored gay rights (true across all age groups in every year). Gay rights did not break through in the Obama years because a particular generation that had been pro-LGBT since the 1980's finally wielded power.