They should enable this for the S9 and Note 9 series as well
Completely useless feature. If you already have a PC you also have more powerful software than anything DeX.
DeX is a good idea for when you are on the go and need a good approximation of a PC. If you have the real deal though, the approximation is rendered useless...
And to think that the above was the reason that they canceled linux on dex (an actual pc on the go, not a mere approximation)... just Samsung things.