From the OSRS and pathofexile subreddit that I common not every small question has asked in the megathread, some people today continue to make their own threads asking themand over the years I have barely ever seen anybody even mention that, they simply reply it as usual. No need for every question to be diverted to it, but not everyone that has a question wants to make their own thread. Perhaps it's that the issue, maybe they just think it does not justify you, not sure where most of them endure but I have read about a few reasons. My train of thought is that when a new participant sees a megathread that is stickied they feel welcome because there's a place created to do so to inquire things. I see it as the distinction between someone welcoming you vs welcoming you.
The time I have had playing Runescape
Nearly got our kill and tried to do a duo in corp for a few hours last night taken every moment. People might wait using a zest until corps stats empty to