+1. This.
It's been like that since I moved on the Island over 40 years ago. In the early 1990's I recall getting stopped by airport "security" on my way home from a long business trip that included USA, Russia, France and about 10 days in UK before flying home.* I was asked by security how my trips had gone in USA & Russia?. it was OK I said but asked how did you know I'd been to those countries? We know your every move sir, was the reply.
*Of course in those days there were no such things as through-tickets to places like USA or even France. Each sector/leg had to be booked separately. The only way anyone knew your travel arrangements would have been through the various booking systems that linked to a central database that collected such information (maybe IATA or CAA?).