Typical generic post, which bulbs are you comparing to which bulb, and what about the other light specifications besides the CRI? It is really pointless making a statement like that unless you back up the specific comparison.
And actually I don't disagree, Ikea do some good smart bulbs, also do some terrible smart bulb, definitely don't do Christmas lights in their range, nor many of the other kind of bulbs. So if you have very minimal requirements for just a few bulbs and they cover what you need then it could be great, most definitely. But their range just doesn't cover a whole home implementation I'm afraid. And why the light can be decent what I also find is that their gradations when you adapt the light, or just dim it, is in rather big steps. Some may not be bothered by that, but say you have a waking up program, or adapting towards twilight it becomes really noticeable that the lights are on and that they are changing.