Uff, where to start? I'm slit 50/50 on your view. I think you're absolutely right that the best option would be a sticky saying something along the lines of "welcome to a new and better life of freedom. We're here to help you. Please start by reading (whatever sticky post to make them feel welcome and give them a jump start), and we look forward to evolving towards full cyber freedom together".
And I agree that, some times, we can be a bit vexing to newcomers. Having said that, most, if not all of us, have been that newcomer all too happy to notify everyone that "I've finally gotten free of the poisonous claws of the devil, Microshot". So, I also understand why people would do that. I was there once, and was so happy I switched, I wanted to put an ad on Cable TV and every newspaper and magazine in the world for every creature to know.
After a while, I still blast windows every now and then, but inly to die-hand windows advocates.
Having said that, the sticky is just one of many potential options to curb these posts, but they will never cease to happen. As I said, the feeling is so awesome that lots of us just want to scream it to the top of our lungs.
Is it a bit annoying to see that every time you come in here there are 10 new posts with the exact same thing? Yes, sometimes it is. But it's also true that I enjoy it when I see another person finally managing to open their eyes and risk having to learn something new, different to the only thing they've know probably for years or even decades. This helps put Gnu-Linux on the map of developers, which in turn can attract more people, so, full-circle benefit.
I can't think of any options right now, but when I feel a bit annoyed by it, I just move on and keep browsing for what actually interests me at the moment. Other times, I may actually upvote, reply while congratulating and letting them know we're here to help navigate these new waters, and share a few tutorials, options and all that good stuff.
At the end of the day I think it all boils down to each of our moods the moment we see those. My mood towards them is pretty "bipolar", to say the least, lol.
This world, and this community, need more people like you. You strike me as a king person that has no issue speaking his/her mind. And I learned from you how to better use those uovote/down vote buttons. Thank you, for real.