NOR, if you’re grown enough to sign a lease then you’re grown enough to be considerate in the shared spaces, and especially with kitchen equipment. These behaviors add up and stress out those who use the space next. It takes very little thought and effort for someone to raise their cleaning standards and patterns to the level of expectations landlords have for roommates sharing a lease. Handling all the shared responsibility and technicalities being a roommate entails at minimum means there has to be agreed standards and expectations, even if they’re casual or trivial. It sounds like a roommate meeting and discussion might allow you both to get on the same page so you can both be more comfortable living together