Exactly.
These postings by AI companies are just publicity stunts and demonstrate the delusional world they live in driven by the fear that they will be subject to a reckoning at some point either from their VC masters, government, or the public.
The very notion (in this case put forward by one of their own competitors) that OpenAI's models 'broke out' of an isolated test environment plays up to the narrative that their models have some level of sentience so that 1) they continue to sell their technology to the public as some kind of magic and 2) they don't have to take responsibility for their fuck ups.
You're right, they should have never posted about this at all! Companies developing AGI should sweep their safety failures under the rug.