This is in the nature of downvotes: they are misleading and are usually perceived as offensive and unfair. Nobody likes to see a red flag or disappear his comment half invisible. This is always followed by an emotional reaction. If you want it to be emotional, this is of course the best method.

Instead of misunderstanding, one could also choose an alternative method. Usually it costs more time and energy. If you want to be fast, you won't take the time to look for alternatives.

However, I would think there is no such thing as "wrong tags", because the categories are freely selectable. I can decide which tag I take for what. Only because someone is perhaps cheeky and places his topic to adopt the methods of advertising for himself, he does not deserve a downvote. Is my opinion. Those who are bothered by someone using a "wrong tag" can safely ignore the content after all. The policy at @steemstem says exactly this: You can post under the "steemstem" or "science" tag, but whether you are perceived or read is a completely different matter.

I think everyone has the intelligence to recognize when a tag is a phoney and decide whether or not to pay attention to the content.