As opposed to running what? Linux (as in, the kernel) is extremely stable and well tested. If the components in question utilise any significant features of t

As opposed to running what? Linux (as in, the kernel) is extremely stable and well tested. If the components in question utilise any significant features of the kernel, I strongly doubt some homegrown kernel-esque project will achieve more stability and reliability than Linux. Sure, if it can be done with a (minimal) amount of embedded code then it quite possibly should be, but if a whole kernel is actually needed then Linux is a fine choice.