It is very interesting, in our polarized times, what people read into a statement, and if they interpret it charitably or in the worst possible way. Like you, I find contempt and hate very different.
The author clarifies a couple sentences later that the contempt they feel is "the cold, hard anger you hold for a collaborator" - "collaborator" apparently meaning something like the very bad WWII kind of collaborator, rather than the benign artistic co-author kind. So, despite the implicit acknowledgement that there are multiple types of contempt, this particular contempt does sound fairly close to hatred.
abc123abc123|2 months ago
faidit|2 months ago