This reply perfectly illustrates the mentality of SJWs: terms like "racist" are just weapons to be used against political opponents, divorced from any actual meaning of the word.

The point was that the comment was based on prejudice. It was deleted and the user reprimanded, so clearly not just an “SJW” jab (itself a ridiculous cliche to invoke in this context). Whether the comment was purely based on religious affiliation, or as commonly happens, conflated with race, doesn’t really matter.