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.
That’s a possibility. I’ve seen mobile sharpeners that have a trailer with their equipment in it and they also frequent farmers markets. There’s also places where you can just mail your knives to and they’ll send them back like they’ve just had some milk plus.