So safe browsing is now blocking pages where the adverts are "often not distinguishable from the rest of the page"? IMO that covers all of Google's search result pages. Most users don't seem to realise that the top results are paid advertising...
Here's a google SERP for "insurance": http://imgur.com/VUqwyPq Are you saying the bright "ad" lozenge next to the paid results isn't explicit enough? And anyways, users don't go out of their way to avoid clicking on ads unless the ads are utter crap. Google's whole business is to make the ads relevant to the search and the user, so who's to say the ad isn't actually a relevant result?
Also, they don't even bother putting it next to each ad. On the right hand side, there's just one 'Ads' at the top and then everything underneath is an unlabelled paid ad. Why?
Google ads started out quite distinct, but they have gradually made them blend in. They used to have a stand-out background colour, then they had a very pale background, and now there is no obvious 'advert box' at all. Google know that many people are misled into clicking on the adverts, but they don't care because of the $$