G+ did nothing out of the ordinary here (if indeed it did anything, there is plenty of guess work in that post) Facebook friending and Twitter following have landed many a person in jail, none of these services got this sort of blame for it.

When adding someone to your circle they get an email notification, same as when you follow someone on Twitter they get an email telling them that, But suddenly in G+ it's 'aggressive'?! sensationalism and blaming one service for something that is done by all and is mainly innocuous is bad form.

And for the record G+ doesn't bulk send invites to all your contacts that just misinformation and FUD spreading.