I think the suggestion here is: if you are in a position to leave your job, and you do not, then than is implicit support for your employer.

I might even say explicit support. After all, how better to support a company than directly working for them? In some business models you're probably generating more value for the company working for them than you would as a customer.

Ah sorry, I think I parsed this wrong. I thought it meant "no stance" instead of "not much of a stance".