The perception of whether it is rude or not for a guest to insist on washing dishes can vary depending on cultural norms, personal preferences, and the specific circumstances of the situation. In general, offering to help with household chores is often seen as a kind gesture, but there may be instances where the host genuinely prefers to handle the tasks themselves.
If a guest insists on washing dishes despite the host's preference, it can be seen as a well-intentioned effort to show gratitude and help lighten the host's workload. However, if the host repeatedly declines the offer and the guest continues to insist, it could potentially become intrusive or pushy.
To navigate this situation, effective communication is key. The host can politely express their gratitude for the guest's willingness to help but kindly decline their offer, explaining that they prefer to handle the dishes themselves. It's important for both parties to respect each other's boundaries and preferences.