I don't think I will ever feel comfortable learning NixOS since they accepted a sponsorship from Anduril until there was community backlash. Anduril performs violent border survailence for the US government and are responsible for a huge amount of death and suffering.
I'm with you in some cases. Who you take money from is not the same as who you give money or support to, necessarily. I think the worry in this case is that it's a surveillance company.