That’s like a thing you should only do if the guy has been really annoying

Who builds a gun range in a way that bullets can escape if shot from appropriate positions?

Interestingly they don’t compare based on encoding or decoding speed on flif.info. So I assume it’s slow or inefficient to decode. Even though that should not be the case for arithmetic coding. Maybe they also just didn’t care? But I’d think on mobile devices the power required for decoding would matter… I’m confused.