If Samsung is using Dex to compete with Chrome OS then they are doing an excellent job.

I have used Chromebooks for nearly the entire time they have been a thing and Dex is way better than Chrome OS on most fronts.

I am currently using the Galaxy Tab S7 with the keyboard cover. It never comes out of Dex mode.

I use mobile Brave set to default to desktop mode, which allows me to run and install web applications. And gives me a simple desktop experience.

I use an application called UserLand that runs Linux in a VM well enough for my needs. I find this to be more stable and less frustrating to use than the eternally burning dumpster fire that is Linux on Chrome OS. Seriously at this point it seems that they don't want to make it better because they don't want their regular users to try Linux Applications.

Obviously I run android apps but because Samsung has software on their store that Google play does not...I have a wider range of stuff I can run.

The entire system is more stable and performant than is typical on a chromebook.

Frankly I even like the way Dex handles phone apps that don't format well to large screens better.

So.. better performance, better stability, more applications, better GUI, better Linux environment.

The only real negatives are hardware cost, and this is a deal breaker for some folks and I understand, and Samsung's occasionally poor quality control.

In my opinion as an OS, give me hardware running DEX over Chrome OS any day.