It’s possible to support the Palestinians but not Hamas.
In sentiment, maybe. In reality? What concrete things can you do to benefit Palestinians that don't also benefit Hamas? Hamas are Palestinians.
That's like saying "I support Israel's right to defend itself, but not to harm innocent Palestinians." You don't get to choose. It's a package deal.
As a software dev, I don't think there really is a better way. One thing you could do to avoid this is to install a second drive and boot to completely different OSes. You could boot to a Linux drive for personal stuff, and only use Windows for gaming.
These gaming companies are pretty aware that they go bankrupt if they either get a reputation for abusing anti-chrst data OR are full of cheaters. They have some incentive to use data ethically. But it's still a good thing to keep an eye on.