Baker Mayfield shouldn't be judged based off his drunken arrest in 2017 ... so says Stone Cold Steve Austin, who tells TMZ Sports the Browns QB is a "class act" with a great head on his shoulders.
We spoke with the WWE legend -- who got to hang out with Bake for his new show "Straight Up Steve Austin" -- and says he had a great time with the signal-caller ... noting BM isn't the villain some people make him out to be.
"It was awesome.