Or because he was the only one not eaten by his father and freed his siblings therefore they agreed he is top dog?

Absolutely impossible. Or if possible, then Zeus was clearly controlling Cronus' mind.

He doesn’t even make his own lightning bolts. Hephaestus does that. I don’t know how much command of electricity, much less electochemical signaling, he has.

With an axe EMBEDDED IN HIS NERVOUSE SYSTEM!

That's been retconned in practically every portrayal of Zeus in the past 100 years, we are allowed to update the myths with better lore.

Someone hasn't read any mythology.

Zeus was the only child of Chronos that Chronos didn't eat alive.

Zeus grew up, killed Chronos, and freed his siblings from Chonos' stomach.

Now, just because Zeus saved the other gods didn't mean he got to be in charge. No. He and his brothers played dice to decide.

Zeus won rulership of the air, Poseidon won the seas, and Hades got the underworld.

In my defense: I'm an idiot, but I did read that story at some point and simply forgot because my brain is fried today. I appreciate the reminder.

This was decided by dice?

Zeus just had so many kids that they voted him in. Nepotism at its best! Lol

Well, the Iliad has a line from Poseidon talks about it.

They shook and drew lots. But it's often interpreted as a game of dice. Single throw for each.

There are other sources, but all kind of say the same thing. It was a game of chance and the three brothers were happy with what they won.

They also shared the dominion over the earth, which is why Poseidon was also the god of earthquakes and Hades was the god of wealth dug from the ground.