In all seriousness, this seems to carry risk of never doing anything deep or hard. In particular, I've been programming for long enough, that I can be casual about many programming languages until I hit something which is actually new, such as in Rust or Prolog.
Promiscuous doesn't have to mean having a low tolerance for difficulty, but everything else you wrote seems to support that. So, are you saying that enduring difficulty is unnecessary, or did you mean something different?
Not the person you responded to, but I actually take a similar approach as them so maybe I can explain.
Firstly, difficulty and fun are not always directly correlated. Something can be difficult but fun, or difficult and unfun.
Following on my first point, different activities or goals usually have aspects that are more or less fun. It’s better to start with the easy and fun stuff. You don’t have to swallow the ocean.
Now this last part really is dependent on the type of person you are. For me, once I’ve gotten into a subject, I just become more curious about it. The aspects of the subject that were unfun at first are now interesting. I’m more invested and I’m more curious. And if I’m more curious, it’s more fun.
To sum it up, it’s not that one can avoid enduring difficulty. It’s more about harnessing your own strengths and curiosity.
Promiscuous doesn't have to mean having a low tolerance for difficulty, but everything else you wrote seems to support that. So, are you saying that enduring difficulty is unnecessary, or did you mean something different?