Having a Doman/Far-Eastern character does not automatically mean the player is a naruto wannabe tryhard snowflake, which seems to be the assumption and main source of hostility towards anyone choosing to roleplay as one.
There are Doman roleplayers with humble origins, such as farmers, craftsmen or service types. I myself am one of those. Extensive lore is not needed to support such backgrounds and they can be easily adjusted as more becomes available.
There's no need for the meddling and forceful 'advice' of outside parties. Let the player discover any flaws and holes in their concept on their own. If they are happy with things as they are, who are you to tell them their way is the wrong way? If you disagree with a concept, nobody is twisting your arm to accept and interact with the character. You are free to choose not to acknowledge them if they do not play by your rules.
There are Doman roleplayers with humble origins, such as farmers, craftsmen or service types. I myself am one of those. Extensive lore is not needed to support such backgrounds and they can be easily adjusted as more becomes available.
There's no need for the meddling and forceful 'advice' of outside parties. Let the player discover any flaws and holes in their concept on their own. If they are happy with things as they are, who are you to tell them their way is the wrong way? If you disagree with a concept, nobody is twisting your arm to accept and interact with the character. You are free to choose not to acknowledge them if they do not play by your rules.