No, I think it has more to do with the way that executables on Windows are 'tagged' as having been downloaded from the internet. When a user opens one of them (such as an installer) they get a prompt if they want to run this code from the internet. Generally, this is considered a good thing.

Browsers, in a stroke of unassailable logic, have decided that the existence of this new security feature should mean they should now start silently downloading executables from websites. After all, what good does it do to have two pop-up warnings that users simply click through?

This is just my impression, I could be wrong about all this.