I think that’s just a personal preference. I still eat off of the same plates that my family has had for years and years. So obviously, that’s not a big deal to me.
For me, being vegan isn’t about personal purity. Yes, I really DO make an effort to cut out all aninal products. But in reality, that’s not possible. Being vegan is about doing the BEST YOU CAN to reduce animal suffering. So I wouldn’t stress out about using plates/silverware that have come in contact with animal products.
Unless it REALLY bothers you. In that case, go for it lol.