It's a very overused and absolutely terrible use of a word.

For two reasons:

1. It has a predefined meaning, and if you read what the DA creators say, they're not actually "slamming" it. While they're pretty openly hostile - and for good reason - that's a far cry from what someone "slamming" someone else or a quote would be.
2. It's inclusion in the headline is for sensationalism, which would not be needed as the "You're an idiot!"-quote already does that. Or maybe it's just surprising how desensitivized people on the net are nowadays.

To think it further, consider the whole headline had been slam-ified:

Dragon Age GOATs slam "woke" lollerz: "Cry moar!"