I tried PieFed for ~2 minutes before switching away from it. What didn't work for me was the theme selection. The default dark theme was too dark & high contrast for my taste, and the other themes were just too bright or colourful for my eyes to rest and read easy.

There was one theme I liked but it introduced a spinning element in the top left corner of the page that kept catching my eye.

Is it petty? Yeah. Could I have mitigated it by installing a browser plugin? Probably.