This is not a problem.
Someone can always make an unclear question. They can do it with words in the title, words in the question or words in the tags. The site response to lack of clarity is, I trust, well trod enough not to require me to go over it.
Tags do convey implicit information, which is why they exist, have tag wikis, etc. It's good, and a useful shorthand. If someone wants a system-agnostic technique they don't need to spend a paragraph explaining "I want a technique I can use across the various games I run, man". I can only imagine most attempts at doing this would lead to even more pedantic arguing in comments.
This is a long way to go for a pretty simple answer.
If you do not understand a question - including its tag use - ask for clarification. It's the actual intended, constructive use of the comment system. I delete comments all day, every day, hoping that one fine day someone might use it to its purpose. Trying to somehow change how everyone intuitively uses tags is not practical or desirable.