There exist people who see benefits of any political stances. That is why the stance is taken. Arguing about whether it is a benefit is at the core of politics. For example, Mr Tan probably sees benefit from certain SF supervisors resigning immediately and is frustrated that they don't.
But it is better to keep businesses out of that, I believe we're better off if they are relatively neutral and thoughtless engines to achieve highly specific goals.
> But, in practice, the "support" can be paper-thin ...
1) This situation is also paper thin. I'd bet money that Tan doesn't do anything that would cause the supervisors to die a slow death. Most attack on politicians are.
2) I've had it made quite clear to me in companies I've worked at that if there was a candidate with different skin colour or gender to me they'd be before me in the line for hiring and promotions. That is paper thin support, but it is due to political ideology and I still don't like it. I would like companies to promote equal treatment and be scrupulously neutral on politics.