Uhm, your link states that they were price fixing over 20 years ago, and were in court for almost a decade. There was another accusation in 2018, but it was dismissed.

That's not a long history of pricing fixing, just accusations.

The difference between 2002 and now is that it is so much easier to follow each other's leads on pricing without explicitly communicating about it and leaving a paper trail. But they never stopped acting indistinguishable from a cartel.