Forcing low quality tags and tag padding onto users and then expecting that they get to stay, a lot of which never get any wikis or explanations or justifications on why they were made in the first place, isn't how it works. You wouldn't argue about a nuke if I started to tag every single type of key cap form factor on a post where the computer keyboard is barely visible, and if you did I would call you an absolute monkey. Sometimes the answer is simply "it's a shit tag" and not a deeper philosopical debate, ergo, the last bit of that post.
BURs are largely a pitch to admins that may but don't need to take into account how its voted on or discussed, so no I don't need to force myself to contrive a reason about a nuke when a simple "this shouldn't have been made" or "this tag doesn't have good value" is more than enough. Similarly, there are some tags that can just be made because they do have value, or ones that need to be discussed because they could be potentially controversial. You should spend more time on the site and in discussions to learn this.
I'm only here because I saw a forum post about doing something with the tags, so my alternate proposal is to chuck them. I would ignore it if it didn't get a forum post, same like what I do with a lot of other tags. You would be surprised to know how your headcanon about how people should deal with tags isn't popular; a sprinkle of dogmatism in the way you reply actually.
it also feels counterproductive because if you keep doing this you're basically creating incentives for users to avoid creating alias and implication BURs for tags they care about since they will know there is a possibility you'll just make a counter BUR to nuke the tag the instant you learn that their tag exists.
Creating tags and wikis requires actual and critical thinking. More users are likely to and already do avoid making any type of tag, even if it's the completely appropriate situation to do so, like a named OC with hundreds of posts. I don't think about, cater to or pander to these users. I'm interested in quality discussion about tagging by people who actually use the site, not people who just want to apply a label to every pixel of an image here.
If a user actually cares and wants to workshop a tag for something they like that isn't tagged but could be tag worthy, the forums are public. Applying this binary thinking isn't a healthy outlook for how people deal with tags but neither is "I should be allowed to make any tag I want without thinking of the consequences or precedents it may enable and others should be forced to adapt to what I want".
also, i think i've mentioned this before, but i still don't understand your insistence calling tags "padding tags". afaik there is no minimum number of tags you need to post something, so i don't think people are coming up with tags just to "pad" the tag count. [..] there's no ulterior motive in this, so i don't think "this is a padding tag" is a valid nuke reason because that just doesn't mean anything to me.
Low quality tags that don't add any value to an image and pet tags are padding tags. Spending time tagging miniscule parts of an image instead of trying to figure out the major aspects of it, and creating new tags where ultimately the sole value is simply more tags instead of high information tags, are padding. This was my gripe with font tags (topic #30059, see forum #336881). This was my gripe with outfits of a character doll (topic #32922). It has nothing to do with a minimum or maximum number of tags, padding is about putting quantity above quality. It doesn't have to be a fully conscious decision either, and often they aren't.