It isn’t rude in the slightest. It’s an observation, not an attack. Is it possible to provide the knowledge? Yes, via the Wiki, tutorials and other means, but you can’t impose that knowledge on people, they have to gather it themselves, many of which won’t because the most they care about is being able to set up the game and learning how to speedrun it; this is fine. However, being able to set up the game and run it is one thing; making sensible decisions on convoluted issues for the greater good of not only the current community, but also future communities is another thing.
Outsiders can become insiders by becoming more knowledgeable and experienced, the same way that insiders can become outsiders by becoming inactive and not keeping up with the times. I am not singling out a group of individuals, I am attempting to explain why the system used here didn’t work.
Ever complain about websites like YouTube and Twitch constantly updating their layout, rules, etc? We’re all guilty of it at first, but then a month or two down the line you’ve already gotten used to it, you’re not complaining anymore and you’re possibly more understanding as to why such changes were made. The initial reaction is based on conservatism; this isn’t healthy for a speedrunning community where most of the rules weren’t thought out properly in the first place.
No, clearly not, that’s why I set up the leaderboards, IRC channel, became an admin to support the development of the site, brought together an initially very scattered GoldSrc community, regularly offer help wherever I’m able etc.