This is silly and ignores how things are "deprecated" in every other practice on earth. Do we still install knob and tube electricity? Absolutely not. Is there still some out there that somebody is supporting some? Of course.

Does this mean that people and places shouldn't migrate out of older practices? No. But people have different priorities. And sure, we may treat "squeaky wheel policies" as a bad idea, but quite frankly that is far and away the most common policy out there.

To that end, please don't go out of your way to insist that your priority is everyone else's priority.