I don't know if this was based off of a community decision, but most of the Muppet Show episode guides include Statler and Waldorf bits that either have a visual gag or another character appearing in their box. Because their banter is always a recurring part of the show, it makes more sense that we don't track every single time they crack a joke and, to that extent, every closing tagline, unless it's visually interesting.
It would be preferred. It wouldn't work on Statler and Waldorf, as we discussed before, plus a big problem is that most of these are just verbal, and for the visual gag you mentioned, you didn't actually upload an image. Call it "Statler and Waldorf Closing Gags" or whatever you like and put it in Category:Lists, or do it as a sandbox ("Sandbox:Statler and Waldorf gags" if you wanted to cover them all, closing or in between, but personally I wouldn't).
That's part of the problem, in most cases the closing dialogue isn't really different from their wisecracks in between, and only in rare cases is it really a distinctive part of the episode's story or closing. A good example is Episode 419: Lynda Carter, since it's part of the theme of characters dressing as or pretending to be superheroes. But "Statler says something, Waldorf says something, they laugh" gags are pretty dull to document. We're not in the business of tracking every joke; see At the Dance, where we include a few specific jokes to establish the format and tone, but we don't, and shouldn't, try to summarize every joke exchange in every At the Dance sketch. We apply the same logic to Statler and Waldorf. Summarizing songs, skits, and plots is fine, but some things are best left to viewers to enjoy. It's a judgment call really (just because something happens or is accurate isn't the same as it being notable; "Fozzie wears a hat in this episode" is usually true but never an interesting statement).
But it's clear this means a lot to you, so if you want to experiment, either a sandbox or a list page is the best way to do it, so it doesn't interfere with our established format.