Firstly, let's get this out the way, short scale basses and guitars are real instruments, not toys or just for children. Paul McCartney - short scale Hofner "violin" bass and John Lennon - short scale Rickenbacker 325. Get my point? OK.
With that out of the way, this little bass is great for a wide variety of people. Beginners of all ages, the young with smaller hands, older beginners who may not have paticularly supple hands any more, but all beginners can benefit from a short bass. My first bass was a Hofner and I went on to play many 34" scale basses, once you have some proficiency the step up is easier than diving in the deep end.
The other group of musicians who really do well with short scale basses is guitarists, who may want a bass around for a bit of practice or home recording. It is almost seemless jumping between a 25"(ish) scale guitar neck and the Ibanez 28.5" scale neck. This is exactly why I have tried this bass. I still have 2 full scale basses, but have been playing a lot more guitar recently and was finding the 9 inch scale difference a little bit troublesome. This bass has cured that.
This bass also has a factor that is hard to put into words, it's unusual and you just can't put it down, it's fun, unobtrusive, light and easy to pick up and noodle on. All excellent reasons to consider it. Anything that makes you want to pick an instrument up is a major plus.
The setup out the box was exact to the published Ibanez specs, action a little high for my personal tastes but still easy to play - the shorter scale seems to result in a lot less string tension. The only issue was intonation was out, all strings were sharp. This only became apparent at 12th fret and above, and probably not noticeable to a new or low experience ear. With saddles adjusted fully back, G was sorted but E, A, and D remained a little sharp on the tuner but close enough. Fret work is surprisingly good for a lower price point bass, tuners are decent and about what you would expect. Volume and tone pots aren't great, but work and I expect the volumes will be more pickup selectors than blenders. While I've not had it long, it's seems at its best with everything on full, tonally it's quite responsive to where you play the string, which is good for beginners and it makes it easy to markedly adjust tone by adjusting playing position. It's not hard to get great tones out of it.
Over all, this is a great, fun little bass for the money, probably not for the experienced gigging bassist unless you've some medical need (but it is very giggable) , but great for everyone else.