It’s your personal point of view .

First, I let people to decided how I am good at security. And your point of view can differ from such of other people.

Second, if you don’t understand some ot these attacks via redirectors, it doesn’t make them less dangerous. I see that all these 5 attack vectors are issues which must be fixed, so I informed browsers vendors and Internet community about them. And everyone must decide to himself if any of these vulnerabilities in different browsers are dangerous to him.