Star Wars universe does have lasers of all scales and power levels.
Yet literally no one uses them well on a personal scale.
The Jedi (and Sith for that matter) imbue it with a power of magical stone, and then…use it as a saber.
To balance this stupidity, stormtroopers, clones and droids all use slow, non-continuous energy blasters. With actual lasers, they could insta-kill any Jedi, but they cannot, because otherwise the movie wouldn’t exist.
I get that, sort of, that… some kind of supernatural/extradimensional energy is essentially drawn into, and then focused by the kyber crystals and the modulation systems of a light saber…
I just had not heard that they involved a mechanically spinning component.