I think passive, as you put it, is appropriate. I like cigars and pipes and I can't help but notice how different the groups are. Generally speaking, pipe smokers don't get too excited about anything.
I just happened to be thinking about this today because I logged onto the West Coast Pipe Show page today (it's less than a month away) and was amazed that you still can't find out exactly who has a table. Some names are mentioned, but you don't get the feeling that they're trying too hard to inspire you to come. It's as if you should be excited about going because there will be pipes and you can smoke there. Last year was great, blah, blah, blah. I want to know about this year.
Here's another example. In the cigar world, if a new line comes out, the forums, blogs, and youtubers are all trying to be the first to get their review posted. Pipe smokers hardly appear interested in new selections. Christmas Cheer came out about 2 months ago and there are two reviews on the TR site. It was the same with releases at the Chicago show. I guess you could argue that pipe smokers have passion for the new tobaccos, but unfortunately, they show it more by stashing away a bunch of tins instead of smoking one and reporting on the initial impressions. Maybe so, but there just doesn't seem to be a feeling of excitement even when the opportunity presents itself.
Anyway...I don't know that pipe smokers are boring, but I think it's remarkable how the relaxing nature of pipe smoking is also evident in the nature, frequency and tone of posts on the web.