I think Juneteenth is mostly relevant to Galveston, TX. I used to see parades related to it on the local news here in Houston because the stations cover Houston/Galveston. The two cities are linked similar to Dallas and Forth Worth.
Anyway.. I think the whole point of this is to gradually replace "racist" holidays like Thanksgiving or Christmas with woke holidays like MLK day, Juneteenth, Indigenous people's day, Kwanzaa, etc.
I feel like people should celebrate holidays that are personally significant to them and their families and probably none of them should be officially recognized by the government.