He doesn't need our advice, he'll keep digging on his own.

He is not taking anyone's advice.

I love that saying, though. I use it a lot in my work. I handle union grievances as part of my job, so when I have a member in trouble and they make matters worse, I tell them this saying.

Another cliche: it's all fun and games until the crazy man wins the presidency. At which time his zero sum gamesmanship will surely cause extreme damage. We will take generations to clean up after a Trump presidency.