Yup, a couple of years ago the welding teacher's wife put oil in the brakes. We had to replace everything. It was in there for about a week and by the time we took it all apart, every seal and hose was going to mush.
1996 Dodge Caravan.
You don't have to replace the lines, but anything with a seal or rubber in it....junk. Including the ABS hydraulic unit.
It was a very, very expensive lesson for him and his wife.