> Every brand has their own resale laws.

Nike / Gucci / every high-end brand has resale laws?

I've never heard of anybody threatening to sue their own customers for selling the product too early. Threatening to void warranties, yes. Threatening to refuse future sales, sure. But suing? No.

This just screams "don't do business with us".

High end brands enforce restrictions on those whom they do business with on the basis of maintaining an ongoing relationship. They don't try to contractually bind individual buyers. You are trying to "brand" this is normal and customary when it is unique and defective.