Can confirm that it works right now (December 2025). All sponsored posts gone, and I didn't have to spend an hour trying to write some Stylus style for it.

Thank you sooo much for this! My LinkedIn feed was getting overloaded by posts with awful AI generated network diagrams that made no sense.

Works well. If you see 'suggested' items, refresh page (control F5 on Windows for complete refresh), and the 'suggested' items disappear.