The video thumbnail alone is rather ugly and should made most people skeptic. But i guess there are people who blindly trust something even if it behave differently.
Thumbnail really don't look very very attractive, but as you say, some people just don't have critical thinking and they fall into these scams in easy way. Especially when such stuff comes from trusted channel.
Pretty easy for me to not use any Google product to be honest. Well, except for YouTube lol. I can use Tutanota and ProtonMail instead of Gmail, DuckDuckGo and StartPage instead of Google Search, etc. but YouTube really doesn't have a decent alternative.
Finding alternative for services like Gmail, Maps or Chromes is easy, but some don't have good alternative. Personally I don't use DuckDuckGo because it don't gives such accurate search results as Google does, especially when searching language other than English. And Youtube, well, you said it yourself.