I think it is not about Linux in isolation, but about the fancy, over hyped tech stacks you see people using.
About 6 months ago I was having a few days off, out in the wilderness so to speak, I decided to try this whole Go thing. When reading about it, I thought nice I like the actor paradigm, I was doing a prime solver from someone's tutorial, and... It was slow. Not slow, slow, but slow.
Compared the same thing to a similar idea in C# in Rx and in TPL, and in F# and in CamelLight, with one in Java.
For my preference the syntax of C# was the best, and funnily enough the old fashioned style implementation I did in Java was the fastest, but not by much at all. Go was about 20% of the speed of the java one, not much faster than the CamlLight implementation.
This wasn't scientific, this wasn't a fair comparison, but I am cynical about the 'buzz' or hype for some of these frameworks.
People often view things like Node.js as free. Which isn't true when you are paying for the hardware it runs on. The 'cost' of C# or MS SQL server isn't just the Microsoft licenses either. You can't look at these things solely in isolation.
However its rather un-interesting to say that a behemoth and status quo are actually good options. 'new' things are much more interesting, so get spoken about a lot more, but I'd love to know something truly high scale, highly available in Node.js, and how much it has really cost them.