Vendors shouldn't be liable for actions of users. And if they are doing this out of well-meant concern for user safety, I suppose this warning screen during boo

Vendors shouldn't be liable for actions of users. And if they are doing this out of well-meant concern for user safety, I suppose this warning screen during bootup would suffice. I would like to know if there are some actual regulations/litigations which forced them or if it's just another money grab like this SuperFish adware.