I personally disagree, after doing hobbyist music production on Windows with Cubase (& friends) for years, I moved to Linux and I found a whole ecosystem well integrated into the OS/distro itself that makes me way more productive with better results.
While the array of finetuned technologies/plugins/samples might not be as extensive as on other more popular platforms, the Jack environment and its freedom is really unrivaled.
I think it has to do with the way of doing things on Linux systems vs other operating systems, while on Windows you have your DAW + ReWire, on Linux you just fire up Jack and a few dozens of smaller applications (+ your DAW, which might be Rosegarden or Ardour or others) that you can tie together with easy-to-use interfaces like patchage or ladish. On that note, ladish is awesome, allowing you to suspend and recover whole jack sessions (with dozens of programs) in a simple click.
Also check out kxstudio, they have some really fancy and nicely built tools that further improve the ecosystem.