To be fair they are not reknown for anything vaguely hifi, if you bought a 610 why would you then want a CD transport??
The 610 requires seperate speakers, and Ruark is veering off their beaten path a bit. So why would you NOT want a CD player? Cambridge did it with the Evo? Marantz does it.
I'm dead sure some 610 buyers would buy a turntable too - a Rega with a nice wood finish plinth would not go amiss.
Your question could actually be why would anyone want a 610??? Because until now Ruark have only been making speaker playback systems, be it internet/DAB/FM radios or whatever.
They've identified a certain segment in their market who wants a bit more flexibility. So now they can choose their own speakers. And the 610 has a built-in phono stage. So again, why not a matching CDP?