I don't think of the hobby part of all of this as having to do anything with smoking. Hobby doesn't encompass the entirety of pipes to me. I have friends who do not want to talk pipes or smoking at all, nor would they even go into a pipe shop ever. They buy their drug store blends and smoke their one pipe all day. They are NOT hobbyist. But,. we've had a ton of members here that do not even smoke, but yet they collect pipes, participate in the forums, and go to pipe shows. They would be included in the hobby category.
For me, the hobby part, waxes and wanes. I may go to a pipe show if it were close to me, and I still buy pipes and love to try the new tobaccos, read pipe and tobacco books, but I can't keep up that level of participation 100% all the time. That is the hobby part. But, the smoking... I will keep a pipe lit all day, all year, but I don't think of that as the hobby... until, I am helping someone better their smoking skills, then that may/or not be a part of the hobby.
But, if someone would rather call it something else, as long as we all understand what you are talking about, I don't see a problem. But, if you're going to create a new term, like, "This conflaborationonx is starting to drain my bank accounts..." then WTF is wrong with you, ha ha.