That is obvious, but google is trying to protect people from scammers. some scammers are using google ads to decieve people by putting fake details on their ads. a good scammer can create a fake MEW phishing site and promote the link using google ads for people to click and get redirected to the fake site to steal their details.
But only a complete moron would click a MEW link that comes from an ad, that is completely insane. Not actually but still super naive to trust anybody on the internet, you gotta always protect yourself thats number one priority.