Even without a specified hardware, you can hide your identity and IP using software. If I am not mistaken, you can use linux for you to easily hide your IP when you are transacting, Kali linux in particular, but it is made for hacking and penetration testing, though, it has some features to protect your identity especially when you are transacting.
Or if you don't like to completely change your operating system, you might store your bitcoin wallet and make transactions in a virtual machine and still using linux.
the network protocol isn't os-dependant. You don't need linux to use a VPN, i2p, freenet, a proxy or a VPN (or a VPS as jumpserver).
It's perfectly possible to use tor over VPN on a windows machine. Tor has a one-click tool that even novice users can use to setup and use a tor router, and many VPN providers have a more extensive walktrough for windows users than they have for linux users (most likely because most linux users are used to look at the help, manpages, readme's, wiki's,... while windows users require more guidance).
That being said, there are specific linux distro's (like Tails) that tried to make the process even safer and simpler than it would have been on windows.
Bottom line: linux =/= automatic anonimity