I think it's more of a conflict of visions. The CoI ("Trojan Horse" for malicious actors) thing is, in my opinion, not really founded on facts but mostly on emotions. Neither is Blockstream the Antichrist that's trying to capture Bitcoin to profit from it exclusively, neither the miners are the bad guys that want to control everything. There may be some interests that could be touched by one of the solutions (e.g. miners worrying about lesser transaction fees in the future) but these fears are mostly based on speculation.
Bitcoin's problem is that as blockchain space and bandwidth for block propagation are both scarce resources (if you have the ambition to become a global payment system) you must make tradeoffs in centralization if you want to scale. Perhaps AnonyMint is right that a degree of centralization is unavoidable with Bitcoin's design.
The Core proposal is: Let the "node network" be decentralized, but allow centralization at the "payment system" level.
The BU proposal is: Let the "payment system" be decentralized, but allow centralization at the "node network" level.
I think both visions are valid, but I consider the decentralization of the node network a bit more important, as it's a basic condition for bitcoin to work. That's why a blocksize increase, if necessary, should be conservative and not only decided by miners, like in the BU proposal, but based on actual network speed/computation requirement tests.