Nodes not accepting 0 fee transactions doesn't make bitcoin centralized. If you don't like this then start from yourself by accepting and relaying 0 fee transactions. Change your minrelaytxfee to 0 and then you can share your node IP address so that others who want this connect to you instead of other nodes. There are other nodes that would relay 0 fee transactions.
By the way are you sure Doge or LTC have free transactions? Last time I checked they had empty blocks but nobody relayed 0 fee transactions.
LTC doesn't. I was going to try to get away with it earlier by sending the funds to my bitmain account because then they'd probably push it through .
Doge I don't think should and if they do, it'll be like litecoin with 0.001 doge or something as a min tx fee so it won't do very much...
That command worked on litecoin core although my mempool isn't doing so well as I can only accept outgoing transactions (firewall issue - I built the firewall and can't work out how to get around it or how to remove it).