I can understand these concerns, but honestly I feel like they are outweighed by the potential benefits. First of all, certainly on my Android keyboard, correcting autocorrect once teaches it the new word, and it will then always use it if spelled correctly, and even begin to learn when to correct to it. So that's a pretty minor annoyance. #1 is an issue certainly, but if you run across someone who doesn't know the acronym, you can summarize the thoughts of this article. Plus, the hope is that it catches on, so that most people will end up knowing it. Presumably if that happens, #2 would also be taken care of as a consensus develops. #3 yes, true, this will make it slightly more difficult. But still, ISIS|ISIL|Daesh isn't too tough either.

The name sounds trivial, but I don't think it's a stretch to believe that if this name actually became widespread, it could have a significant (if small) impact on "Daesh's" recruitment, which would seem to be worth the annoyance.