I suggest the OP read the many videos and reviews on Roon and why someone would and would not use it. If you want it’s features the set up a core and DAC. The confusing part is some higher end streamers can be cores and DAC all in one.
i also agree with many here that said unless you get a super high end streamer then there is no sound quality degradation from Roon. There is something to be said for a high end all in one unit with super short paths and all high end parts and isolation. How can you go wrong with that.
I for one love Roon. I don’t do vinyl and don’t want to. Roon is the best interface and it’s way of music discovery is second to none. I will totally agree it’s not for all but if you want to explore it’s for you.