I've never worked at a small remote only company that regularly flew the whole company anywhere. I've worked at one company with 75 employees or so that flew 5-10 remote engineers up to NYC to meet with the rest of the company who lived within driving distance (though they were all remote).
I doubt there are all that many people meeting the following conditions: work for small companies with one office, live far enough away from that office to need to fly, work for a company with enough extra money sitting around to fly everyone out, work for a company that wants to fly everyone out, are willing to fly out. I really doubt there are enough to have much impact on carbon emissions.
