Wait they have not gotten into the rangefinders are quieter, range finders are lighter versus range finders are light weights, SLRs wysiwyg and range finders have parallax spats yet. Let the entertainment continue.
Person you answered is correct.
Same as film vs digital, where is no SLR vs RF, as long as you really know how to use them both. But many on this thread after RF as it is SLR. And it is one sided approach. Same like digital is superior to film.
Parallax is only strongly affecting the alignment of objects. The effect with hand and something in far background "in the hand" is impossible with RF. But if it doesn't have to be extremely precise in terms of positioning it doesn't really matter as long as it is RF camera with correcting framelines.
Wysiwyg isn't so obvious. If you take picture of still apple it is one thing. If you are taking picture of apple going down on new Newton head, wysiwyg is with RF.
RF will not allow you to capture the exact correlation of different objects in space, but it will get you the moment of time calculated in one mirror blackout.
I'm taking pictures of kids jumping onto the swimming pool for sometime now. With AF DSLRs. No shutter lag at all. Yet, hard to get it without going into 10 frs burst mode.
I took film RF couple of times instead. I took one frame always per one jump and it was always perfect. Simply, because of no mirror blackout and availability to see outside of the frame while paning it in VF.
Cheers, Ko