In what may well be a u-turn, Samsung has started releasing One UI 2.0 to the Galaxy S9 and Galaxy S9 Plus. The Android 10 update may be the last OS that the two devices receive, but it is better than having to wait another month or two, right?
https://www.notebookcheck.net/Samsung-confuses-Galaxy-S9-and-S9-Plus-owners-with-latest-One-UI-update.452210.0.html
What a waste of time. Samsung and Google should be ashamed of themselves.
If quality and timely software updates are what you desire, get an iPhone.
You will be disappointed with whichever skinned version of Android, and also with stock Android. Although the level and type of disappointment may vary.