Could you provide more detail as to how analog connections can be compromised?
An obvious example is a poor quality connection. You may have experienced gross cases. Ever have something seem curiously too low in volume (for where you're used to setting the knob) but still passing sound? Then you boost the volume up for a moment and it kind of 'forces' the signal through and the full volume comes back and sticks?
Now, that's an example of something clearly wrong of course! But the point is the part where the thing was still passing sound but at lower volume. If you were to analyze the signal when that's going on, you'd see degradation. Loss of highs and transient peaks and some distortion. The root cause is a poor connection acting like a resistor. There's chemestry going on with oxidation growing in the gaps of that poor connection.
Now think of the cases that aren't gross but have that kind of thing going on at 10% or 20%.
The system fidelity takes a little hit there. It's insidious to catch unless you get an opportunity to A/B something and hear it or it gets worse enough to reveal itself. Again, the gross case can be filed under "broken". But the 10% case might be a cheap unbalanced audio cable.
I said the word "unbalanced"...
Here's another opportunity for rf noise to get in. Unbalanced connections aren't bad per say. Keep things short. Avoid ground loops. Load the output properly. But the balanced signal cable can run 100' and cross power lines and you'll be none the wiser. Another thing to fuss over in the analog domain at any rate.
Analog is intuitive and immediate. Put power in a wire and it's just right there. There's no cryptic voodoo and computerized sub-components running behind the scenes. It's just intuitive. But get a dodgy connection somewhere and... have fun with that!
Digital on the other hand has a couple interesting charms. The part where all the expense and difficult signal handling is all on the front and back ends with the AD and DA converters. Those become over the top critical! But everything in-between is just shuttling ones and zeros around. No 0.0000000000000000000000001 millivolt value to preserve anywhere. Just simple ones and zeros. You still DO have to mind that data to make sure it isn't getting altered or corrupted. But the nature of the encoded signal means you usually get glaring artifacts when the one/zero pipeline breaks. You can do stuff like subtract one file from another. If they have the exact same set of ones and zeros, they will subtract perfectly to zero. That gives you an absolute way to critique an audio file against the master that might otherwise have differences that were below your perception.
I tend not to trust digital devices that can't connect to a computer and controlled as I please. That led to computer as media player and FLAC files. But I digress.
That help?