Quite interesting, I haven't considered gov votes to decide on pool rewards before but not really sure how he's "bribing" people. Like just offering them cash to allocate more rewards on a specific pool which then brings more liquidity to it from others as well and makes selling the rewards he gets being a major LP there easy? Doesn't sound healthy.
I guess I don't have to personally worry about this much as the only LP's I have in mind for off-chain are bnb-zing, eth-zing and potentially other L1's and L2's, though one may wonder about the distribution of LP zing rewards between hive-engine, eth, bnb, etc, I'd say it's probably best to choose a different metric than letting stakeholders/gov decide on that.