I wasn't making any suggestions for the distribution. I was simply attempting to compare that one video player worked but not the main one that came with the distribution when concerning DVD playback.
I personally can easily find another piece of software to use. I was looking at this situation from a very Linux newbie point of view.
The less than tech savvy people that I know and assist from time to time may not be able to understand that the application that came with the OS will not work with this even when you apply the "workaround or fix".
They just want it to work.
I do personally understand the issues in keeping up with the GNOME developers and how much this can be a PITA at times however the folks who come to Zorin may not understand this so such.
If Zorin is going to keep on bundling a certain item that should "just work" after running through a guide, it should just work.
Especially when folks who are paying for a Pro edition and who are extremely new at Linux. When folks see the word Pro, they just expect the installed things to just work.
I personally know that this approach is unrealistic however again look at the issue through a different viewpoint.
I'm not here to give the distribution a hard time. Not the case! I am testing distributions and hoping to get others to jump from the M$ ship and find a happy home with Linux and one of the contenders is Zorin.
I want to in full confidence tell folks to go to this site if they are a Linux newbie, purchase and download the Pro edition and after working through a any available guides (if necessary), have their computer "just work" as they wish.
I am in NO way badmouthing Zorin at all! From what I have experimented with it, I can see the appeal that can lure folks give Linux a try. I currently run Linux but not the Zorin distro.
It can be said that most people don't play DVD's on their systems anymore. Many manufactures have removed the optical drives from their systems! However I know a bunch of old school folks who do and wish to do so.
I happen to be one of them 
I will take a look at some of the suggested applications to see if they work any better.
VLC will be my backup plan.
I appreciate the input that I've received so far from here. As far as totem goes, it is very strange how the Flatpak version and the .deb version (that ships with Zorin) behave differently to this issue.
Now I wish that I knew more on the development side of things.
Oh well. I will tinker some more on the test machine and see what I can get figured out.
Thanks folks!