Presumably there's a lot more modern software written for Linux which you'd end up running through a compatibility layer from Haiku? The better option seems relative. I could be misremembering how Linux programmes are handled on Haiku though.
Maybe the fallacy is not exploring what a given OS is great at?
We don't need to clone UNIX all over the place.
But Vitruvian is running its own graphics stack so no X11 or wayland applications will run afaict.
VitruvianOS has the clothes of BeOS, which is nice and refreshing.
But Haiku has the soul.