[dang]

Sometimes it's manual and sometimes it's software. If it's software, it won't permanently ban the account, and you'll more likely see [dead] comments followed by live ones. On the other hand, a banned account can have its comments restored to live status by vouches from other users, which might be hard to tell apart. On the third hand, software sometimes will permanently ban an account, but that's linked to patterns of spamming. Spamming and trolling are different phenomena. Spam is easier.

> I don't see any reason why posting about [...etc...] is a big red flag [...] It is certainly easier to troll on these subjects than it is about how much Rust sucks, but, in isolation, I'd call this a chartreuse flag, at best. I do agree with you about your assessment of this user's current comment history, however

It isn't a red flag in principle but it's a big red flag in practice because these accounts pattern-match extremely reliably with certain classes of users who routinely end up getting banned. Once you've been doing this for 10 years you notice these things early. I don't mean to sound like this is some sort of special power. It's just gruntwork. Believe me, it's boring.

Occasionally someone comes along who (a) is truly a new user who hasn't been banned before; (b) walks like a troll and quacks like a troll on troll topics; but (c) turns out to be an intellectually curious person whose mind, let's say, functions a bit differently from most people's. They might even be that thing we all dream we are and basically none of us is: an independent thinker. Obviously we want such a user. But the sad truth is that the dreariness of pattern-matching turns out accurate the overwhelming majority of the time, and for every such outlier, there are hundreds of trolls - or dozens of trolls making hundreds of accounts. So we play splat-the-mosquito, the mosquitoes respawn, and the karmic wheel turns.