Just because something is mentioned in EULA, that doesn't give a program vendor total and absolute right to be a total jerk to the user. I mean, they could, but they'll also lose users if they do. Because in the end users won't really care what EULA says.
EULA is there so users can't just sue the company for every tiny nonsense, but that doesn't take away their right to complain about it on company forum and request a better handling or design of things. Because as we've seen, even if installation of 3rd party tools is in EULA, they've admitted that auto installation of SafeZone browser was delivered badly. But what's done is done now. They need to be more careful in the future as to how it is delivered and presented to the user. As seen here, even if it's free, that doesn't mean people will grab it or accept it unconditionally.