I think it's somewhat redundant.
I don't choose powers for the skills they affect, i choose powers because they fit a concept.
The synergy between powers and skills kind of follows from there.
It's not like i choose skills and then go and say "now what powers affect my skills best", or the other way around.
Choosing skills and powers is an interconnected process. And you need to know what skills do for a power precisely to make decisions. Knowing which skills are affected alone won't do it.
I suppose the "Skills Affected" section is useful to get a quick overview, and as a reminder for those not closely familiar to what skills a power utilizes. And in some rare cases to quickly see which powers are suited for a concept.
If i build a character and say "He's a berserker, so he has no discipline", then glamours would not readily apply to him, as it uses discipline to work. But then again, glamours would not fit a berserker in any case.
So, bottom line:
Personally i think it's redundant, but i know the powers and rules quite well. And any custom power has to be read carefully in any case to see how it works.
For those who want a quick overview and/or reminder of how powers and skills are connected it is certainly a useful summary.