Nothing surprising. The forum is rotten at its core, many mods and admins deeply involved in scams (and what a joke is DefaultTrust?); as far as I'm concerned, their actions make them scammers too.
You can pretty much assume that mod = scamlover.
In what way are the staff do you think the staff are involved?
Usually the best way to fix issues like this is to suggest solutions instead of just throwing around accusations. It seems like lots of people here enjoy pointing out what they think are problems with this forum but don't offer any viable solutions that would fix them.
If people think moderators are deleting scam accusations, then why don't we have more accountability for the actions of moderators?
Perhaps a log of mod actions be visible and posts/threads that are deleted be accessible via this log for a brief amount of time after they are deleted. Then you can easily see what exactly the mods are up to and instead of thinking they are deleting scam accusations you will be able to quite easily prove it.
A useful tip: the website bitcointa.lk regularly crawls bitcointalk.org and has an archive of deleted posts so you can use this to see the posts people delete, including moderators. If they are indeed aiding scammers by deleting scam accusations they are doing a bad job as the scam accusations subforum is very lightly moderated.
Another common accusation is that Theymos is aiding scammers by allowing them to purchase advertising. How do you think he should solve this problem?
Should he ask all advertisers for Photo ID?
Should he then submit all ID scans to Law Enforcement? if not what happens if he is compelled by law to hand them over?
Should he hire private investigators to background check each and every potential advertiser?
Should he personally decide which ads he wants to display, and then be accused by people of censorship or being biased for or against certain advertisers?
You also touched on the staff being anonymous, I don't think thats the case. It seems to me that the moderators are not required to prove their identity nor are they required to publicly post it. They may or may not be anonymous and it is certainly possible to find out who a number of them are. I'm unaware of any forums that require volunteer moderators to prove their real identity or have it publicly accessible. I can't see why people have issue with this because knowing who they are doesn't change anything, they could still be "deeply involved with scams". Many scammers in the Bitcoin community are known yet remain unpunished. Many mexican drug lords are not only known but internationally famous yet still remain free. Knowing someones identity does not make that person more trustworthy.
I would also like to point out, if the moderators are deeply involved in scams then why aren't they deleting the hundreds of posts such as yours that accuse them of it? I find it quite strange you accuse the staff of these things yet they allow you to post it. Try accusing the mods of any other 100,000+ member internet forum of aiding scammers, I can almost guarantee you that the post will be deleted and you will likely be banned.