I believe there are other spots in the forum where this issue came up. Specifically in a formal advisory from Glowforge, I’m not sure but there was some robust discussion on venting in all kinds of situations and paying attention to where your exhaust would end up once it left the tube and the potential for going back in the house or sucked into place that you didn’t want it to go. I think some discussion regarding demonstration events and shows touched on this issue.
So in terms of reading all the posts and noting that you need to think about what’s around the exist of your exhaust stream, yep, it’s been there. Finding a nice, central location that touches everything and all the ramifications? Not really. Kind of like the sound issue. Some folks are very surprised at the sound of the Glowforge. The Marketing didn’t seem to make mention of that fact. Only in slogging through thousands of posts could you get a good sense of how important this issue could be for some people.