Perhaps I misunderstood the OP. The sentence “Now I am thinking to use Linux” led me to believe that the OP might go either way depending on feedback from the forum. I thought the OP was asking for help with a decision, not help with Linux specifically. When it comes to choosing between Windows and Linux, I felt that audio and graphics compatibility were two areas worth researching before taking the plunge. I wasn’t trying to say Linux is bad. I was just advising the OP to know what they were getting into.
I agree with everything you said about Linux audio. I don’t think our opinions are in conflict because we’re talking about different classes of users.
I have a Scarlett 2i2 audio interface hooked to my Mint box and it runs great with zero configuration, just like you said. Admittedly, your assessment of Linux audio may hold more value to the OP than mine because an individual home user may not need all the high-end tools, and might be served by native Linux offerings just fine. At the same time, I think everything I said is still true in regards to the professional audio realm. It can be tough to compete in the pro world if one doesn’t have access to Universal Audio, Waves, iZotope, BBE, etc and can’t exchange DAW files with other shops. LV2 is okay for home users, but it’s not at the quality pumped out by companies that have spent major cash doing what they do. I would love to pay zero dollars for an open-source noise reducer, but I gladly pay for iZotope RX because the results are that much better. Even among the free plug-ins, I would still prefer the Variety of Sound VSTs over similar LV2 options, but those VSTs may or may not work on a particular Linux distribution. (And yes, I realize this is all subjective opinion.) My simple point to the OP was that if audio will be a major part of their production pipeline, Windows and Mac probably offer faster, easier, and better options than Linux in possibly every way. I didn’t say Linux can’t do a good job at all. It can. But it might take more work, and the OP should consider if that will have any impact on their workflow.
Operating systems are tools, not ideals to be protected and defended against opposition. Sometimes one OS is better for a specific job than another. I like Linux, I run it, and I’m not trying to bash it. All your points are good. So why would someone recommend Windows (or Mac) over Linux? Because in some cases like audio, the industry pretty much requires it. Lame, I know. But the human and business elements are just as strong as technical elements. The day that iZotope-level stuff works natively and reliably on Linux, I will tell people “sure, jump in with Linux and don’t think twice”. But for now, I felt a little caution and research could be in order depending on the OP’s ambitions.