The post tells you there is a single point of failure: if you wanted to DDOS OpenAI, you'd target write-heavy operations.

For that reason, I find it actually bold that they disclosed it, and I appreciate it.

The article reminded me of a similar post about MySQL use for Facebook from the Meta team, which had the same message: big database servers are powerful workhorses that scale and are very cost-effective (and simpler to manage than distributed setups where writes need be to carefully orchestrated - a very hard task).

The two core mesages of both articles combined could be read as: 1. big DB servers are your friend and 2. keep it simple, unless you can't avoid the extra complexity any more.