All the S5e's will have it (and all landscape-oriented displays for that matter). It's effectively unavoidable with the current technology we use to do screens (though higher refresh rate displays would mitigate the issue).
The reason it is unavoidable is because all screens are set to refresh in a certain direction (based on the location of the display controller). In the case of a TV or monitor, the displays refresh top-to-bottom. The Tab S5e is "meant" to be a landscape device, so its display controller refreshes top-to-bottom, assuming you are holding it in a landscape orientation.
However, that means if you use the tablet in portrait mode, the screen will be refreshing right-to-left. Hence when scrolling vertically in portrait, you'll notice that the right-hand side is updated faster than the left-hand side. Thus, when there's fast and fluid movement on the screen, you'll see the jelly effect.
Try going to a webpage that you can really see the jelly effect on in portrait. Then turn your tablet 90 degrees into a landscape orientation and scroll through. You'll notice the jelly effect is completely gone.
All of the Tab S5e's will have the "issue," (well it's not really an issue, but a design choice), but individual's sensitivities to the jelly effect will be subjective. Hence you might get people who can't notice it or don't think it's too bad, but they should all experience it to the exact same degree from an objective measurement point-of-view.
You can [watch a YouTube video explaining how TVs and monitors work](https://www.youtube.com/watch?v=3BJU2drrtCM), it goes into the top-down refresh pattern that even modern TVs use. I have two identical 4K 60Hz LG monitors in my PC setup, one in landscape and one in portrait. If I use smooth scrolling on the portrait monitor, I can notice the jelly effect there, too, because that monitor is now refreshing left-to-right.
A higher framerate display in the S5e would largely mitigate the issue because, while it'd still be refreshing right-to-left, the whole screen would update itself faster. So if you got the display up to 120Hz from 60Hz, I imagine the amount of jelly smearing would be exactly half.