I’m not a lawyer. But as @mtmail points out, they’re legally obliged to defend it even if they don’t give a hoot about your particular site. So if you ignore it

I’m not a lawyer. But as @mtmail points out, they’re legally obliged to defend it even if they don’t give a hoot about your particular site. So if you ignore it, they may have no choice but to pursue legal action - as in a lawsuit. That could get expensive for you.