@frederic i get your sentiment.
But keep in mind: their business model is dependent on people perceiving them as safe. and their threat models must include "every human on the planet" and potential attack surface is HUGE.
what these many false alarms are definitely doing (for me and non-techy people ive spoken too) is that they create the sense that google is taking the security aspect of their job serious.
the majority of people dont know that there are better ways.