The present question has been inspired by a question in philosophy SE which has been put on hold as off topic, to my surprise. My question is however general in character, and does not pertain to one case only.
Is the use of the word "philosophy" a topic for philosophy SE? Following are two arguments in favor of viewing the use of the word "philosophy" as a topic fit for philosophy SE (rather than, for example, english SE).
Just as the history of philosophy is a concern for philosophers, at least as much as for historians, so the use of the word "philosophy" is a concern for philosophers, at least as much as for linguists. Philosophy is a highly self-reflective form of activity. That is, philosophers are interested in many aspects of the philosophical activity itself, including the specialized vocabulary that surrounds it.
When people ask about the word "philosophy" on philosophy SE, they are not asking about the common usage of this word. That is, they are not asking about senses that every educated language speaker is supposed to know. Rather, they are asking about senses of the word "philosophy" that are informed by actual knowledge and experience with philosophy. Therefore, philosophy SE is the natural place for such questions, rather than, for example, english SE.
Do you agree? If not, how do you respond to these two arguments?