Not that I have any say as its not my league, heck I don't even compete in it
*yet*
But that's a tiny pic showing nothing but a single line of chat, which could have -but may not have been- from a pickup race or practice session. Course, full proof would need to include the replay and the time stamp included.
On the other hand what is Nolan doing chatting while driving? That is a dangerous activity to be compared with drinking and driving