My belief is that anyone who keeps a rifle (or gun) for any reason other than display should be staying proficient in its use and their ability and keep it sighted in by getting out and practicing from time to time.
Don't count on a surplus of ammunition being available for training purposes.
I absolutely agree (and for any functional “display”, you should still be proficient in its use, in case!
That being said - the extended ammo shortage has begun to impinge on my trigger time - and while I have handloading gear - components are nearly as hard to come by. I am practicing a lot less than I really would like to.