More information is here https://www.thatguitarlover.com/blog/what-is-true-temperamen...
But this is also why I mention both fret compensation systems in my original post.
I've known a lot of musicians that have used the necks but mainly only while sponsored and none of them prefer them. Big names in the guitar world.
You're better off spending that money on a better-constructed guitar. And lessons.
So many people mistakenly think that gimmicks will make them sound better. TT necks. Fanned frets/multiscale. The right effects chain...
Maybe YOU don’t want it, but it prevents strings from going flabby without needing much heavier gauges. Which does help with a wide range of playing styles and genres.
Unless you also believe that all guitars should have a single scale length or something, and a single neck profile and fingerboard radius. Otherwise if you concede that it comes down to feel+preference then there’s no argument to make against multiscale instruments.