I haven't read the entire thread, sorry!
Most Tattlers I've interacted with have reasonable opinions with good intentions (see Lauren Goodger's recent parenting mishap, for example).
Tattle's reputation seems to precede it online - and people just assume that it's full of hatred. Another website I'm very active on has a Discussion forum and I was told "Tattle is vile" - but I got the impression they were parroting what they'd read, rather than what they'd experienced. If people took the time to READ, they'd discover most members call out hypocrisy, stupidity, lies, greed (eg, all the "Beggy Mitchell"s!).
YES, you do get people who post in a very angry and almost unhinged manner (thinking of one or two members) but that's the exception rather than the rule.
Tattlers tend to be sharp-witted - I've had many LOL moments. What Tattle does is prick a pin in pompous egos and holds a mirror up to their bad, deceitful, or plain unlawful behaviour (thinking particularly of Katie Price).
I think Tattle was originally based around influencers and bloggers, but that's a world I'm happy to avoid!