I have no issues with discipline, if that is what this was. Celebrate once you cross the line, but not before. This guy, not that many games ago, cost the Pats 6 points with his lack of ball control. He is still a relative rookie, but inviting contact before the endzone is not what I want to see, especially after issues this preseason and season with fumbles. It shows confidence, but it also shows cluelessness. If he misreads the defense behind him, he would not be the first person to lose the ball while showboating before getting 6. I seem to recall something like that happening to Tyrone Poole after an interception. If Ridley's showboating resulted in a turnover, and it almost certainly would if the ball came out, then I expect few of his advocates would be celebrating his running.
He is very talented, but I often wonder, when BB comments on strip drills practiced daily by the defense, if he still cannot hold the ball during those drills and thus presents an ongoing liability.