It’s wrong suggestion. Bcs soap stone utensils will hv pores. If u use detergents it will get settled in the pores. Use rice flour for cleaning scrub with salt. Don’t give ideas without checking
The seasoning process we do with turmeric and castor oil is to seal the pores so the stone can manage the heat while cooking. Dilute the soap in water and we use it regularly for cleaning and the soap. Though we recommend natural cleaning agents like you have mentioned, in our modern homes - we do see that use of soap is not detrimental to the cookware. We have recommended this post many usage and cleaning and cooking.
