All the responses are ascribing a nefarious ulterior motive for that piece of text. It could well be true, as these orgs have enough resources and data to A/B test it to hell.

Or, it could be that, long long ago, that phrase actually conveyed sincerity that won customers.

Soon, that became the next big customer retention tactic to apply. Next, it became cliché. Now it is just grating on our senses to hear the fake insincerity echoing from these huge organizations all around.