No, right knowledge is power. Suppose I am a sniper and I know about all the parts of a bazooka, and I can't switch specializations, what use is it to me? No use at all. You may say it become useful in the future, but the fact is that it is unlikely.
Oh why did you accept vi_spex...
The sniper would lack bazooka blast power that he would have never used. Wouldn't it be better he knew the parts of a sniper rifle? Another example is a doctor knowing about all endangered species but he being a human doctor, he has no use. Right knowledge is power. Knowledge is a like a book. It could be a good fact book or a utterly unuseful penny dreadful.
Yes, right knowledge is power, random knowledge is a blocker.
Some more examples are a nuclear scientist knowing all about archaeology, or an astronaut knowing all about law. We all store useless knowledge thinking some day it will come in use, but the fact is our brains get overloaded and we get that knowledge at the least favorite time we would need it.