it should rather mean learn to understand bitcoin as quickly as possible 

 *basics 

 I don't see anything wrong with the comment. It's usually reserved for naysayers and closed-minded.  

 I have experienced that many people say no out of unawareness and not out of conviction 

 Truth, but to create the post requires some conviction (at least here on #nostr where you can't easily delete previous notes).
I don't see the phrase used often for people who are generally curious.  

 Not quite as bad as "have fun staying poor". 😀
The frustration is understandable however. 😮‍💨