I believe that post was breaking news at the time. Before even the openai announcement of the proof and also before more details from openai on how training data was/wasn't used.

we cannot rule out that de-identified data derived from their usage of our products helped improve our models

For instance openai originally posted this, then investigated and then later ruled out use of the data.

Considering people are extremely unlikely to change their upvote once it's been made, I don't think you can draw too much info from highly upvoted breaking news which later turns out to be exaggerated or inaccurate.