One of the key points from the linked question is that the lens is designed to sit only so far from the film/image sensor.
Rangefinders don't have a reflex mirror, allowing much slimmer camera bodies. Because of this design, lenses can sit relatively close to the film/sensor.
SLR's, by virtue of design (gotta have space for that mirror), locate the lens slightly farther away from the film/sensor.
It is relatively easy to mount an SLR lens on a rangefinder (or mirrorless). The SLR lens is designed to sit farther away from the sensor - so all one has to do when moving it to a rangefinder is provide a spacer equal to the difference between what the lens was designed for and where it will sit on the rangefinder. Like an extension tube.
However, going the other direction is much harder to do. You'll be taking a lens designed to sit, say 35mm from the film plane and putting it on a camera that sits the lens ~44mm from the film plane. (I'm not 100% on these numbers, just an example).
By being pushed out, your focus is going to be greatly off...restrictively off. This means that you need an adapter that has a glass element in it to help focus the light at this newer distance.
The quality of that adapter glass follows all of the same rules that we judge lenses by. Except finding excellent adapters is much harder than finding excellent lenses.
Because of this, even if you did re-mount those vintage lenses, they wouldn't give you the same look and feel to the photo. Trust me, I shoot vintage equipment as well and know that urge to want to remount things.
But, like Caleb and Micheal Clark have said, you're best bet is to leave these vintage cameras as they are and enjoy them from time to time as budget permits. Get a lens for your dSLR that mirrors the vintage, like the 50mm f/1.8 STM. Learning to shoot this lens on your dSLR will improve your ability to shoot with the vintage gear as well.