"Open source" is a term that was created to subvert another political and social movement (the free software movement). So, it's inherently political in nature. You might see it as "only a license" but I would argue that is a shallow way of looking at the problem. Only in the recent past has it become possible to run a computer with only free software. Before then, users HAD to use proprietary software. To claim that free software is nothing more than a license is to ignore the fact that 30 years ago you couldn't use a personal computer in freedom, that all users were slaves to IBM and the other companies. This is a social and political issue, just like all of your other freedoms are social and political issues.

But maybe you don't care about freedom. I'm not sure why, but you probably have some shallow justification why "it doesn't matter for you".