People with in-depth understanding of the issue are typically the ones who react to questions. Think about technical support or discussion for Bitcoin. The majority of the posts in such sections receive a small number of responses since only individuals with in-depth technical understanding of Bitcoin can answer inquiries and provide their own understanding of the technology underlying Bitcoin.
Because everyone responding to you is educated about what you have requested or can elaborate further for you, I am confident in the reputation of the forum and believe that any information gained from it is firsthand information.