All that tells you is that they haven't at all abandoned the disinformation: Now they are blaming Anthropic for it and trying to shift attention to them.

You can still learn something from it: Look at what they do, not what they say - look at how sophisticated their public communication is. They deliver that information in the perfect manner - not only the redirection and striking a blow against their rival, but they use an anonymous "person with knowledge of the matter": A named source at OpenAI might betray the self-interest in the statement, but some anonymous third party is just reporting what they know.

These guys are very good at it, though that shouldn't surprise you. Look at their product, in one sense a highly effective disinformation machine.