Cultural appropriation alarmism is based on the idea we can’t fully appreciate the experience of another so we shouldn’t perform, celebrate or consume it. Problem is, the only experience we can truly appreciate is our own individual experience, why should that preclude me from taking/giving what I can from/to everyone else?
At the end of the day the heart of this is truly economic protectionism, limiting the competition to satisfy consumers. This time instead of consumers of goods or services, consumers of culture. Like when guilds/unions would decry non guild members performing the service they perform. Like all protectionism it is sold as everything but.
Be courteous, respectful and decent. Also, feel free to celebrate and embrace each other’s differences and mix and match them into something new, unique and beautiful.