I guess this is lawyer talk for..
...."Don't admit to shit. Just deny everything and hope they go away. Most people can't afford to fight so they will just go away. Deny everything".
That's what's happening here. They are clearly at fault for using an external script but not actually checking what the fuck it actually does.
Not as serious obviously but so many local rags do it with all the pissing adverts and crap they have on their site to "make money". The amount of times you'll visit their sites on phones and get fake AV pop-up adverts. Some ones from up North I've had this happen with. All because whoever is coding their site, isn't checking the legitness (is that a word?) of the code they are embedding.