I think claiming UI details and overall accessibility as a result a weakness of FFXIV is perfectly valid.

I can only theorize, but I wonder if the outdated launcher is still used as it works the same across all platforms. PCs of all power levels, PS3 (RIP), and PS4 used the exact same launcher (can't personally confirm Mac users since there are only like 5 of em in the world), and SE has intended from the start to keep players on any platform on generally equal footing. So, no fancy PC launcher that's more intuitive since PS4 can't have it.

So, I doubt it will get any major updates on any kind unless it outright breaks.