Problem/Motivation
Views tables have a setting for column text alignment. This currently relies on CSS shipped with Views module, although #3436855: Remove the views-align-* CSS classes will refactor it to use core's align.module.css classes which are otherwise identical.
There is no RTL support.
I think that either this should be using start/end - which requires updating the core library after #3436855: Remove the views-align-* CSS classes or just the entire option should just be removed. If someone wants to theme a specific table they can do that with their own CSS. No core themes use it, and I don't remember ever using it on a project either.