The context is that the company posted a trailer video that was very obviously AI generated art (6 fingers, Nike shoes in a fantasy setting). The pushback is entirely focused on using the slop machine to make slop art and writing.
People may be forgetting the game has 20 years of content already, why do they need to make more faster with GenAI? Its already a massive piece of software.
Runescape is quite literally a dinner table name it is that famous. Their only true competition is probably World of Warcraft. The community is already huge. What competitive advantages are they going to lose? Likely none.