In general, people/companies attempt to hide their use of AI when building apps/services since there's an ongoing substantial effort from progressives to cancel that shit. That stated reasons vary, but the trend is very, very clear.
if you are only seeking that in order to be impressed you are not very good at the business at tech
hey it's their PR statement who insists it's not just for prototype but real apps which do real work are being used in production. "where are they?" is a fair question