It's a new patch release. Additional maintenance down time for hotfixes is normal.
Doesn't take much to work your way back through the Maintenance Notices on Lodestone to see when servers were down.
Sept 12/13 (right now) - patch
August 31/Sept 1 - emergency hotfixes
August 28/29 - normal post-patch hotfixes
August 22/23 - patch
July 24/25 - emergency maint NA worlds only (Data Center Travel and cross world difficulties)
July 12/13 - normal post-patch hotfixes
July 4/5 - patch to add Data Center Travel, addition of new EU worlds
June 6 - patch
May 23/24 - patch
May 16/17 - housing lottery fix
April 24/25 - patch
April 13/14 - emergency hotfixes
April 11/12 - patch
So about half the maintenance down time in the past 5 months has been to add new content/system updates to the game and half of the rest to apply the normal hotfixes that end up needed. (Yo, SE! Stop adding new content and system improvements to my game, you're interrupting my game play. /s-heavy)
Out of about 3700 hours in this time period, servers are down for about 120 hours. Most players aren't inconvenienced for more than 20 of those hours because the maintenance is occurring outside of when they would normally be playing the game.
You genuinely find that worth complaining about?