Besides making the airport more pleasant, targeting announcements to the relevant travelers also means they are much more likely to be heard. When 99% of announcements are irrelevant, we just mentally screen them out.
Every single SaaS product seemed to have a dozen onboarding floating modals that need to be dismissed. It would have been impossible to read them all. In most cases I had used the product a lot before but I simply had a new corporate email so they thought I was a new user.
So if any said anything important I wouldn’t know because I had to dismiss them all.