Unless you want to suggest there is literally no other way on a device capable of running the YO app to send a message to a group of people (which would be an absurd thing to assert), then I will stand by my statement. If it's useful, it's useful in spite of its own stupidity, not because of its own brilliance.
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You think warning Israeli citizens of missile strikes is silly and pointless?
No, I think YO, the app is silly and pointless.
Unless you want to suggest there is literally no other way on a device capable of running the YO app to send a message to a group of people (which would be an absurd thing to assert), then I will stand by my statement. If it's useful, it's useful in spite of its own stupidity, not because of its own brilliance.