I think you should try look at this objectively because I'm not sure why this is an issue or can't be asked here. Bitcointalk is probably the best place that you can get any sort of information on bitcoin and anything related to it so these questions are bound to be asked. Sure, people come here just to try earn some money or ask for other sources to do that, but many others also come here for valuable help directly related. What would you like us to do exactly? Block or trash any mention of twitter or any suggestions for other sites? I think there's bigger issues to worry about here.
I agree that some people come here to find out about Bitcoin and crypto, but these people are coming here to ask which boards, and which people to follow, to find out about Bitcoin, and the suggested answers are not here on Bitcoin Talk. They are leeching quality members, because some people are now saying that BT is not the place to talk about crypto. I don't agree, and there are good posts and helpful members here, but sometimes it can be hard to find them because of all of the low level account farming posts.