Today the first of Feb is Global Switch day, Spread awareness of the Fediverse in your communities.
And obviously the Piefed codebase is so politically and ethically agreeable… /s
People are more likely to donate to a project that they actually use. If more people are using piefed, it means more money going to that project rather than a bunch of tankies. So I can see why people who disagree with the Lemmy devs might want to direct people elsewhere even if the software itself is apolitical.