Our group sets revenue share to zero because all our projects are fundraisers. We send the money we get from itch to charitable organizations and mutual aid. I still lose some money in the process due to payout fees. It's really ridiculous that itch couldn't bother to communicate the reason for the greyscale to the userbase. If they were to communicate openly about this, I'd consider putting a revenue share above zero.
It's also definitely an accessibility issue, as mentioned upthread.