My tools serve me, not the other way around. It’s not worth the time and effort to wash by hand or sharpen on a whetstone. I don’t need an expensive knife to cook at home. A pull through sharpener and honing steel are adequate. Get the right material and you don’t have to worry about the metal in the dishwasher.
I wash mine by hand and sharpen them afterwards, when I had the feeling they get dull. Sometimes my GF puts them into the dishwasher for some reason. I don’t care, really. Still sharpen them before putting them back in the block.
But you do you buddy. Show them kitchen tools who’s boss!