"please donate via Ko-Fi rather than Itch, as I receive a higher percentage of the amount you send."
Couldn't you just edit your account settings and configure Itch's rev-share to 0%?
I initially did that to try and figure out where the money was going, and I still got less from Itch than I did from Ko-Fi, and the breakdown doesn't tell me where it's going. It just says "User paid X, you get Y". I've since set the Itch portion back to 10% because I want to support the platform with those who buy the game, but if someone's specifically donating to me, Ko-Fi seems to be the better route.
At the end of the day, I'm not that bothered either way. I only added that sentance because people kept occasionally asking.