Saying it was a last resort was a bit dramatic on my part, better phrased would be "If the ad link works, please use it and support what Forge does. If the ad links are completely broken for you, use the circle i to not let broken pages stand between you and enjoying Forge".
Yes this is a relatively new issue, Google is flagging all downloads from Forge's servers as Potentially Unwanted, you can recover the download if you go to Chrome's download manager (ctrl + J) and select "Keep Dangerous File".