This is the equivalent of a "Do you guys not have phones??"[1] but on a way larger scale.
At least where i live i am able to use the bare minimum of phones, even working with tech. The friction is increasing though, which worries me a lot, and day after day there is a new attempt to shove it down your throat if you want to be considered a member of society. Seeing that a lot of countries (including mine) are pushing for age verification, and the whole thing about Android blocking 'sideload', by the end of 2026 you won't be considered a human being without a government certified smartphone.
https://www.msn.com/en-ie/travel/news/ryanair-s-new-check-in...
There's a line item which basically said "mobile web" and they wanted it gone to save some number of dollars per year.
Internal job tracking metrics would have to answer why any time is going to running this thing, and god help us if there's a security breach via this endpoint we were supposed to have eliminated N time ago.
An unsupported internal API is one thing - and they're generally a huge timesink anyway. An unsupported external user interface is a cost center which I can't justify, and impacts numerous other parts of the business.