It's NASCAR's game and always will be. PLENTY of examples over the years- penalizing drivers critical of NASCAR, the legal T-Rex #24 that was told never to return to the track. I was listening to a Jimmy Spencer podcast (I believe it was Winston Cup Scene)... Bill Jr. called him into the NASCAR hauler once early in his career and told him France would see to it that Spencer would never run again if he didn't clean up his act. Don't assume that kind of stuff doesn't happen anymore. I can't remember the source but I remember reading Jeff Gordon would've retired sooner but he was told by Brian France he needed to stay at that point in time. The string of VERY suspicious Daytona 500 pole winners in the mid 2010s. The rise, peak, and fall of the mysterious "debris" cautions. It's NASCAR's show and it always will be. They are really out on their own island as far as sporting events go with minimal/no oversight beyond the offices in Charlotte.
That being said, 50/50 shot this was a "planned" penalty.