I didn’t see Max get much of an advantage from any contact or leaving the track like Hamilton did, which likely played a part in not getting a penalty. Plus, he was squeezed off the track by Leclerc in turn 1, which also may have been a factor in just leaving things alone.
By the time Leclerc and Max got to where the Williams was it was behind the wall. (I thought, anyway. Have to go back to make sure) Obviously they may not know that’ll be the case when they call it. I also wouldn’t be surprised if the earlier close call involving Lawson played a part in the decision making. In the end no one really seems to be complaining about it, which does lead me to believe it was fine.