According to the wiki page for doggystyle, the penetrated partner must be bipedal and the tag should not be used with feral characters. Why is this the case?
It is very confusing that a post with two dogs in the doggystyle position which doggystyle was named after should not be tagged doggystyle. It goes against common sense and tag what you see. There is the from_behind_position tag which includes doggystyle as a possible position, but this is a less obvious tag to search for and is more obtuse than just searching for "feral" "doggystyle" for specific positions.
Related to this question, why does the "missionary_position" tag require both partners to be lying horizontal specifically? I understand table_lotus_position (standing missionary) being a separate category, but why isn't kneeling allowed within the missionary position tag?
There is a victory_position tag that sometimes applies to kneeling missionary position but, again, this seems counter-intuitive and it only seems to make searching by position more difficult than necessary. Combining any form of missionary position -- standing, kneeling, lying -- in one tag, while having the option of other tags such as table lotus would make it much simpler to search for posts with two partners in the missionary position, unless I am overlooking something. The current tagging situation seems confusing and less efficient for searches.
I'm certain these tags wouldn't be the way they are for no reason. Are there good reasons behind why these two tags are so specific, and why they can't be more generalized to make searching by position easier?