Your statement has an accusatory tone and yet I don't know what I'm being accused of. Coming in and asking for advice or suppliers instead of using someone and getting scammed and making my first post a big complaint? ... Ok?
If people wait until their good faith is exhausted before they come post, there's still nothing stopping them from recounting their experience in a reasonable, unbiased tone (and even better if they have the self-awareness to mention that they realise it might not hold much water coming from a newcomer). It's not just people who come with negative experiences that are treated with suspicion, but those who come with overly generous praise as their first post. Don't come across as a shill and you shouldn't be received as a shill. This isn't Amazon where you're posting product reviews. It's a community forum. If you attended a social gathering in real life and the first thing out of your mouth is a complaint about, I don't know, let's say the social group's "favourite restaurant".... how do you think those people are going to receive you?
Need I remind you that all of this business is still not technically legal and so people have legitimate reason to treat newcomers with suspicion? Getting bitter and retreating to lurk in the shadows and only coming out to #metoo about the community that you're too afraid to interact with (but at the same time you expect to welcome you with open arms) isn't going to get you any closer to being trusted. You're not entitled to anyone's trust, especially if you're not willing to take the gradual social steps towards earning it.
This whole discussion derails the good vibes this thread should have. If you don't like the community, don't take part. If you want to be part of the community, then practise social awareness. Complaining and insulting is never going to create a good first impression.