Used to be a janitor around a year ago. Just raiding is the stupidest thing you can do, it's basically effortless for them to deal with. There are better ways to disrupt the moderation process.

>spam false reports for random posts
Big thing the mods ask jannies to do is clear reports so the queue is clean and they can find actual rulebreaking stuff. If you spam random reports they have to shift through a lot of garbage to get to stuff that needs addressing.

>use the wrong reporting option
Janitors can't see what type of report you filed, all they see is its place in the queue which is influenced by the report type. It's too much work to ban each person that used "underaged" for a random shitpost because they need to ask mods to check, however they can still see if it's a false illegal report so don't use that.

>spam words that usually get filtered to something else
Not so much a moderation thing but on the server side. The word filtering system takes up a lot of resources so if everyone is spamming soy at once, it'll all get turned into onions or based and cause a big strain on the server.