I never understood this about PoW projects.
First of those are bots, so while blocking tradeogre is cute, it probably won't work because merge mining your coin is still better than anything else out there.
Secondly and most importantly you won't stop centralization on good will. You have to give people disincentives against centralization. That particular pool merge mines, nobody would deny the sweet sweet profits of merge mining just because you don't like them doing it. I can solo mine so that to help you however I'm just one guy. To actually solve the issue you have to incentivize solo miners.
Solo miners are plagued by "bad luck" you have to do something about it. One idea is to use a variable reward system that gives a fee to those that solo mine (or small pools) which you take from large pools (you take from them in the form of fee incurred).
So that giant pools, which is 80% of the hashrate should only get 70% of the rewards (say) and a small guy should be able to get 130% of the rewards ....
There is certainly a math formula that balances all out: The closer one is to the median hashrate of the network the closer he'll get a full reward, if you are below you get more, if you are above you get less. At the end of the day the inflation rate is balanced out between those that mine w bad luck and those that mine w better luck (large pools).
Just do it!
We're in the midst of an intense bear market. Develop! So that you can be different than your competition, be better and survive it.