Do people honestly think companies should have a say over what their employees or members spend their personal money on?

Even without the “freeze peach” context, the company directly chose to give this individual in particular way more money than most people have including probably most of their other employees, that would enable them to make donations at the scale of hundreds of thousands of USD/EUR, so they already do have a lot of say. And in this case they’re a cofounder, not a random employee, so they as a person quite literally decide the company’s values.

That seems like a fascist attitude to me.

There’s nothing fascist about harm reduction.