Terrible lyrics are ALL OVER the place in Country. New AND old. (Though the new tends to be too much for me to stomach).
One grammar error that always made me chuckle was when people sing Heartaches By The Number and say, "Heartache number three was when you called me, and said that you WAS comin' back to stay". (Ray seems to have alot of those).
I don't care much about grammar in songs either. "If you love someone, set him or her free." That's grammatical correctness up with which I will not put. (footnote to Winston Churchill.)