The riflemen in the Continental Army were a special breed of soldier. They weren’t subject to all the drudge work that most of the other soldiers had to endure.
The downside to this is, they knew it and they took advantage of it. So when one rifleman got himself in trouble, word got out and suddenly a relatively small problem turns into a relatively big one.
And while George Washington kinda-sorta recognized this stratification of soldiers, he didn’t do much to discourage it. He did, however, demonstrate more patience with the infantrymen than most people would give him credit for.