Are you sure that the first one who appear on google page this fake website? I tried it on my browset but it appears the bitblender.io not the fake one. It's really recommended that you have to double or even tripled checked the url once you want to use this kind of service because there's already too many clone site such service like this that wants to scam people.
Yeah. As you can see from the image below, google ads shows scam sites on their ads. However this is not a new thing, it has always been like that since i do not think they really filter out that much of the ads they put up
As you can see, there is bitblender clone site and bitmixer clone site, which are meant to scam users. If it is advertised on google ads, that should ring a bell already.