No. I remember a phone app ( Whatsapp?) doggedly supporting every godforsaken phone, even the nokias with the zillion incompatible Java versions. A developer should go where the customers are.

What does help is an industry accepted benchmark, easily ran by everyone. I remember browser css being all over the place, until that whatsitsname benchmark (with the smiley face) demonstrated which emperors had no clothes. Everyone could surf to the test and check how well their favorite browser did. Scores went up quickly, and today, css is in a lot better shape.