During deployment of a reward splitter, the ownership of the newly deployed account is given to the owner of the LSTRewardsSplitterController contract.
Since _account will be the real owner of the reward, it should be able to specify the fee receivers and their respective portions by calling the LSTRewardsSplitter::updateFee and LSTRewardsSplitter::addFee functions which are onlyOwner functions.
Inability of the rewards owner to controll fully how his rewards should be distributed.
Manual Review
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