I recall seeing in a movie , how the M1 was supposed to have given away a soldier's position and the fact that his rifle was empty, by the sound of the clip being ejected.
It seemed dubious to me then and even more so now in retrospect.
I was issued and used both the M1 and the M14, and still consider the M14 to be a real improvement over the M1. .. But so far as the clip ejection being such a give away
I have real doubts on that one !
Yes, the ping was audible, but mostly covered by the shot going off. ..And in daylight hours, we didn't need the ping to tell us the clip was ejected, since it popped out right before our eyes..
I did not consider the M1 particularly prone to jamming because of sand. I never used an AK, and perhaps the AK is slightly better that way, but I lay that to less han
stellar machining "precision". ...Much like the M3 grease gun..rugged and great at close range, but no sniper's rifle.
Now, the M1 carbine, although very handy, was IMO more prone to jamming by way of sand clogging.
Besides other features, the M14 had a magazine feed as opposed to a spring clip. Use 20 rounds and replace 20 rounds just that quickly. I never happened to get an "M1 thumb", but know many who did !

i cannot comment on their usage in frozen conditions, since I did not use them in such an environment.
One place where both the M1 and M14 have it over the new Mattels, is their good base for a bayonet. That's IMO, since I never was issued an M16.
For any riot..the old rifles could settle things quickly, without even using a bayonet ! The old "vertical"...or "horizontal butt stroke series" is almost unstoppable in such a situation.
Here's a video produced on the subject;
https://www.youtube.com/watch?v=eRWVQKaBWtA&t=169s.