I'm not objecting just confused: Is it about firmware, BIOS, fucking NVIDIA device drivers or what? We have Linux and Free BSD, don't we? Is it impossible to have Core's wallet running on top of a clean installed Linux?
I'm seriously interested in your term 'closed source computer', actually it is my main research topic for the last couple of years, I'm just wondering how deep is your interpretation of this concept and whether you have developed any idea as an alternative?
There's more to a computer than just the OS. A lot of firmware such as processor microcode are closed source. So it doesn't matter whether the OS you use is open source; if the firmware for your hardware and the hardware itself is closed source, then you are at risk of that closed source being malicious or containing something that can be exploited. One example of this is the Intel Management Engine which could allow someone to remotely access and control your computer and there's no way to disable it because it is baked into the hardware and firmware, both of which are also closed source.