Do not judge based on your experience, this is a crypto-oriented forum and there are not many users who are interested in Forex trading. Perhaps one of the reasons is that Bitcoin (and other cryptocurrencies) offer better trading opportunities than Forex and at the same time with less risk.
So roughly speaking about your ANN, where you present some of the Forex platforms. They are the only platforms that accept Bitcoin as a means of payment. And that's their connection with cryptocurrencies.
Also, someone who opens an ANN for his webshop where he sells coffee salts for left-handed people could complain about the lack of people interested in the discussion. But just like in your case, there are a small number of people who need such a product, and there are already other acceptable solutions.
Here is an excellent example of ANN where you have a regular discussion with all aspects. https://bitcointalk.org/index.php?topic=577207.500