No its what basic professionalism looks like. No engineer is going to try and do the job of a PLC by manually switching 100s of electrical connections a second. The PLC is a useful tool. If you work with an engineer that tells you "I dont need to know how the system works, the PLC manages that" , theyre not going to be an engineer for very long.

Sorry I meant the argument parent was responding to and confused by, not their argument. I realize it was unclear.