Let me state this again and in bold.
The most recent DDOS attacks have not been targeting the game's servers. If they were targeting the game servers, all players using the targeted servers would be getting disconnected. This is not happening. It is only some players being affected while others are able to play as normal.
What has been getting targeted is a node in the national internet infrastructure that a lot of the FFXIV traffic passes through depending on where the player lives. I live in CA. I'm not being affected at all. I have been able to play without disruption. My cousin's family lives in CO. Watching them connect and disconnect has felt like a game of Ping Pong at times because they are affected. A friend who lives in IL has also been affected but unlike my cousin's family, he has a VPN. He gets disconnected, he boots up his VPN and routes around the issue. He is then able to play without a problem.
SE cannot do anything against a DDOS attack that is occurring outside of their sphere of control and influence no matter how much you want to blame them. All they can do is notify the companies that operate the national internet infrastructure that traffic to their servers is being affected by an outside attack and let players know that they may have problems connecting to the game due to that attack. They can do nothing about the attack themselves because SE is not responsible for your internet connection. They are responsible for the game servers and the game servers are running just fine.
Complain to your ISP since you're paying them for your internet connection and you're not getting connected.
SE does report to the companies responsible for maintaining the nodes but that's all they can do. They can't magically fix what they do not own or operate.
Which is a large part of the problem. The average consumer doesn't have a clue what's happening so they jump to conclusions about who is responsible for fixing things.
Right now, SE is not the party responsible for fixing the problem because it is outside of their control.