Yeah, I often took it as the ones that learned druidism pretty much cared more about their way of life rather than their race at that point and felt their duty to be druids and nature, kind’ve not having close ties to their race as much or at least drastically reduced interaction.
Did have to pretty much give them equal stuff between the races haha. I don’t really recall much about the whole tauren druid history stuff besides Hamuul but he always felt shoehorned in for tauren druid involvement with firelands until Legion, then he actually really helped out with druids.
They like to give horde at least 1 notable druid per race.