Do you think this is good for a project in general, let's admit it, Bitcointalk topics always shows up in search engine like Google while on telegram you have to scroll a lot or wait for an answer and they are missing up some potential investors who first look on Bitcointalk for project that they want to invest in..
If they don't update the thread with latest updates it doesn't mean they abandon that project, probably they are busy developing stuff or they ask you to see the latest updates on social media instead such as Telegram, Twitter, and Facebook. This is why you shouldn't get information from one source.