Bionicle isn’t lego, it’s a different product line. That’s like complaining that your legos don’t work with duplo. It just sounds like you have trouble keeping your toys organized.
I think there was another line with unique parts called Lego Knights, but they came after bionicle (and if I remember correctly had similar parts, but I don’t know if they interoperated because they’re were after my time; they might have been slightly bigger).
Lego parts are usually made to be useful with all other Lego parts. Having some be useful only for very specific sets is not great.
Bionicle isn’t lego, it’s a different product line. That’s like complaining that your legos don’t work with duplo. It just sounds like you have trouble keeping your toys organized.
I think there was another line with unique parts called Lego Knights, but they came after bionicle (and if I remember correctly had similar parts, but I don’t know if they interoperated because they’re were after my time; they might have been slightly bigger).
Legos are compatible with dublos btw. Dublos are exactly twice the dimensions of Legos, and you can put 4 2x4 Legos on top of a 2x4 dublo
The nubs are completely different sizes
Yep, the single dublo nub will fit just perfectly on a 2x2 cluster on a lego
Edit: there’s even Lego help article for it
https://www.lego.com/en-us/service/help-topics/article/building-with-lego-and-duplo-bricks