Well, in 3E, it did require a whole rigamarole. I suspect that it does in 5E as well.

> Sure, anyone can grab two swords, axes, pistols, whatever, and flail
> around as it were.

As I understand it, nobody with any intent of hitting anything on purpose is going to dual-wield firearms.

As far as flailing around goes, people can do that with one melee weapon as easily as two. Fighting with intent to survive, on the other hand...that takes training, regardless of whether you're using weapon-and-shield, a two-handed weapon, or two weapons.

Parrying daggers were a real thing in European swordsmanship as well, by the way. So, either "learning how to fight effectively" is equivalent to "a whole rigamarole," or you may want to reconsider just how silly it is.

Peter Eng
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Insert humorous comment here.