I think you're in a very small minority if you think that someone using the phrase "tyranny of notifications" is implying they live under a dictatorial regime. Most people just understand the hyperbole.
Scary things make people pay attention and click the links. I loathe the casual use of the term “lynching” by people in the public eye but same rules apply, using exaggerated, scary words to sell your weak point. Not saying I agree with it, but it’s marketing and journalism.