I don't see anything suspicious, but I browse with scripts and ads blocked, so it's possible that you encountered something that never reached me. Thanks for the warning. Unfortunately, it's too late to edit my comment.

I am on desktop and saw no such warning, but I'm also using adblockers and noscript.

It's a Wordpress site, probably hacked. Some Wordpress exploits only try to target 'high value' user agents like iPhones.