Never said I love billionaires and capitalism, just saying there are better ways to fight them then assassinations. It's trying to solve a systemic problem with an individualistic solution.
We need to organize and unite to defeat the capitalists, if people rally around a dead oligarch then that can be good, but if it alienates people due to the inevitable collateral damage then that's bad for the cause.
Either way though the main challenge is building solidarity and there are safer ways to do this with more mass appeal, albeit less drama, then assassinations.