OK, let's say your right and filters don't stop anything (I remain wildlyskeptical), how about we leave them in just case your wrong. If I'm wrong there's no harm. If your wrong you've just junked up the blockchain with garbage.
Discussion
They did leave them. Core 30 is not out yet but when it dies come out it will still have all filters. Todd's PR was not merged. Default limit for opreturn will be raised to make it basically unlimited. You can still set your own limit in your bitcoin.conf to whatever you want. Also opreturn is the only filter in question here. All others Policies remain the same by default I believe. Policies and defaults exist for making sure users don't submit unintended transactions. They don't exist to stop anything from being relayed.