No it isn't, and no you shouldn't. This is just another in a long line of decisions which limit what you can do with what you purchase. I'm not talking about copyright violation, but about fair use, which is gradually being eroded by companies like Apple, Disney and Microsoft.
And it is Linux and FOSS which are the last bastion of free choice.
I went down to the nearest electronics stores to buy a Unix based notebook computer (I would have settled for a desktop). I couldn't find any that did not run Microsoft Windows except for Macs, so I bought a Macbook Pro. Never regretted it. It has all the Unix goodness I've come to love over the last three decades.
And it is Linux and FOSS which are the last bastion of free choice.
You're welcome. I've contributed software fixes for dozens of different software packages, more on Linux (including the Linux kernel and glibc) than on the BSDs, but whatever. Unfortunately, even RedHat and Canonical do not offer a line of hardware that comes preinstalled with their OS on it.