The big split is over Core’s plan (v30, October 2025) to remove the long-standing 80-byte limit on OP_RETURN data.....this lets people embed more arbitrary data in Bitcoin transactions. Core devs say this supports innovation and neutrality, but Knots supporters (and some prominent Bitcoiners) see it as “opening the floodgates to spam,” risking blockchain bloat, higher resource requirements, and a dilution of Bitcoin’s purpose as sound money.⚡