It's a suspicious post, why would you make a post if attackers are performing a sms phishing, that happens all the time.

Possibly because OpenAI have just made a post stating there has been a breach https://openai.com/index/mixpanel-incident/ and implicating Mixpanel as the cause

But I thought the submitted title was misleading and there's no breach? You seem unsure.

I also just received an email from OpenAI regarding the incident.