Absolutely wrong.
When it comes to what BTC is and using BTC, it is easy to understand.
Now if you are talking about understanding the mechanics of how it works, yes, that does take some technical knowledge. That applies to just about everything in life so, your point is?...
Not all people are like you or us who easily understand bitcoin, there are others who even though they read the simple meaning of bitcoin and its function, there are others who do not immediately grasp what they have read.
There are others who have a fast pickup of understanding and there are others who have a slow pickup of understanding. So we cannot blame them, that is why it took some months before they really understood bitcoin because they tried several times to understand it through their readings, watching youtubes in their language, Although what you are saying is correct. But we do not have the same level of understanding.