VC's don't mind losing money if they can control when they lose it. They can use losses (selling shares back for $1) during the same year that they have big gains (maybe they won big on Uber that year) and they can offset capital gains taxes which will sometimes justify a loss they took on another investment.

In the case of the Gumroad guy, this is exactly what he did/ He basically let VCs choose when they took their losses once they realized Gumroad wasn't going to be the next Facebook. They used the losses to offset some huge wins they got on other investments. The VC walks away happy because he exchanged otherwise useless stock to increase his returns on something else he sold that he did really good on. The owner of Gumroad walks away happy because he gets his company back. Win-win for everyone.