I like to use my fingers too, particularly when counting.
But seriously, I can probably break a couple dozen eggs and break maybe only 1-2 yolks. I'm no super chef. I can't imagine this is any particular skill that can't be acquired in only 1-2 months.
I was amazed a couple years ago when entirely by instinct I grasped an egg with one hand and cracked the shell and then still holding the egg in one hand I just threw the egg into the skillet, retaining the shell in my hand. I looked it it and I looked at the skillet, and I thought WTH? I never did that before!!! I didn't even consciously intend to do what I did. I just cracked the egg and sort of used my thumb to widen the crack and threw the egg into the skillet. I wondered if I had been watching too many TV cooking programs. But ever since then I don't even crack eggs over bowls. I just crack them on the counter and throw them into the skillet (or mixing bowl or other container). (Unless I need to separate yolks and whites of course.)
I'm not so sure we need so many fancy tools. Lots of times techniques are better than tools. I still don't know what got into me with my one handed egg cracking technique.I don't need any tool to separate yolks from whites. I don't think anybody else does either, except those who manufacture such implements..