So you decided to post this anonymously? Despite this I'll try & respond to your points.
No, what's becoming tiring is the likes of skinny trying to convince everyone on here, at every sodding opportunity, that Moz is racist, fascist, a bigot, & whatever else he can think of.
Save it, we've heard it, many times, you're done. No-one else can discuss whatever article, or anything else, without him chirping in with the same old practised lines (stock phrases as you put it), & then it descends into a fist fight. We heard him the first time. We've heard enough.
When you talk about skinny being marginalised, well, he's reaping what he's sown. He doesn't have to come here; he doesn't have to post, so why does he? The people on here hate him, as much as he hates Moz, & skinny has brought it all upon himself with all the historic hate stuff he's posted & continues to post. So either he's mentally ill (seriously) or he just revels in it all & thinks it gives him some type of 'status' as 'king agitator' or something equally as farcical.
I personally don't condone all this racists shit which appears on here. I do not believe Moz is racist by any stretch & I don't have any control over who posts what, so am not sure what your "why do you allow other users - registered and anonymous - to continually make racist statements that go unchallenged?" actually means. You should ask tseng that question, not me.
This place needs some moderation by tseng, but maybe that would be too much like hard work & conflict with his other interests. Many people have been asking for moderation for some time, from what I can gather, but it appears to suit his purpose to let right, left & other types of extremist on here.
Something's got to change otherwise this place will either die, or just become a full-time extremist forum, & the likes of tseng will be seen as someone who has promoted, condoned & sanctioned it, but actually did sod all to prevent it from happening.
He should be, frankly, ashamed of himself.