Short answer
Yes. The 10% comes off whichever rate you're on: 0.405% instead of 0.45%, 0.315% instead of 0.35%, and 0.225% instead of 0.25%.
The discount lasts for life on the account that joined through the link. It applies to manual and copied trades alike.
See the checks for yourself
Every token on DYOR comes with a rug check, and every trader with what their copiers actually made.
18+ only. Self-custodial: you keep your keys. 0.45% per trade, no minimum. Memecoins can go to zero.