I’m probably just splitting hairs, but, thinking about it, 3-6 is probably more accurate than 4-6. Edited the previous comment for that.
Also, not everyone considers their IF works games, or is designing around that assumption.
Historically, those are the games that tend to do badly at the comp but then are are fondly regarded and remembered and end up being important milestones in the history of IF, right?
Just goes to show.
(what it goes to show is left as an exercise to the reader)