Well they shutter release on the XA is exactly the same as the XA2.
In regards to your question.. it depends on your shooting style.
The rangefinder window is small, but it is bright. Some people find that it is too small for them and prefer to just scale focus.
I have seen some very, very good images from the XA2, (other photographers). It just takes care and practice getting the image right.
And I have made some very, very bad images from the XA. Again, it takes care and practice even though you can focus, you need to focus well, hold the camera steady, and stopping down a bit helps.
So dont think that you cannot make good images from the XA2.