He gets banned whenever he posts because his mental illness is taking over and he can't help but include slurs in his messages. Snowflake mods then usually either delete his posts (like on reddit), shadowban him or just ban his whole account. Which is really a shame because ignoring the slurs, his posts give you a lot of insights into his mind.
Mods have good reason to ban him if his comments are peppered with racial slurs: they are doing their fucking job. Mental illness is no excuse for racism. Calling the mods Snowflakes is going a little too far IMO.