Yeah, it’s a weird combo for FOSS because macOS is quite the opposite of what FOSS stands for. However, quite a few people think it’s the best and… I don’t know

it works just fine because people generally earn the same depending on education, experience and profession. There are tools online to check what range you can expect based on your parameters, and then there is some flexibility based on your person/skills. The salary is then negotiated during the application phase.