If the truly are trying to scrub hate from their platform, I applaud their effort, but they'll never succeed. Hate is too hard to define and so subtle you can't actually remove it all.
If they just want to remove bad words, why not use literal black-text censoring in situations like this, like TV has done for years? Give this user the option of preserving their moronic comment, hate and all, without the bad words that I'm sure advertisers are asking to be removed.