It is very common for companies to blame their customers and tell them to contact their ISP if they have an issue.

But Square Enix is usually good about it and proactively contacts the ISP themselves to resolve the issue or setup countermeasures against a DDoS. So it's rare that they respond like this.

Since the reddit post seems to explain that it's a political problem, it does explain why Square Enix can't do anything about. If it were something they could physically change they probably would have, but when it's political all you can do is hate politics and complain to the overseers of paperwork.