As in a lot of "serious" threads, three points come to mind:
If you look at the modest intelligence of the average person you need to consider that half the people are less intelligent than that.
Second, is the Dunning-Kruger effect and its corollaries.
If you don't have sufficient knowledge or intelligence to understand a difficult complex idea, concept or fact, neither do you have sufficient knowledge or intelligence to know that you don't understand.
The other point about the Dunning-Kruger effect is that no one is exempt.
Lastly, having different ideas than everyone else doesn't necessarily make you an independent thinker.
Two reasons:
You may not be a thinker at all, your mental processes may not qualify as thoughts.
You may just be a contrarian who always disagrees and whose beliefs are just as completely determined by others as if you agreed with them.