Tbh, I can understand footballers wanting to decide what they want to do with their own money. It should have been made a voluntary decision, not an involuntary one for many.
The thing is, I can't see a reason why I would say no myself, if put in such a situation. If you earn thousands per week, some millions, there's no doubt you'd have a bit to spare.
For me, it wouldn't be about what the owner or someone else is doing. I, myself, would want to contribute in these troubling times.
Many people have lost their employment, or no longer receive a salary, and now suddenly see their lifestyle falling apart for something outside of their control. Laws and restrictions tend not to protect many employees in situations, so people are falling foul to various scenarios all over the world.
From THAT point of view, I would want to do everything in my power to be a positive force, and if donating my salary to those who need it helps, then so be it.
To make a long story short, I think the process should be voluntary, but I also don't see why any one of these footballers should be saying no, without regard for the future and what happens next.