I think heritage quests are very varied. Quite a few of them just do not focus on heritage. From what I am seeing, the orc one is very much on point. Some in the past have been laughable like the Worgen one.
Meanwhile when it comes to allied races, some of their recruitment scenarios definitely showcased their heritage while others did a much worse job at it. Like, the vulpera one told us nothing about the vulpera which is a shame because neither did Vol'dun. And e.g. the Void Elves don't really have a heritage, they are just high elves who voided out.