The magic of radio - and relatability - is immediacy. You lose that with voice tracking. The closest you can come is "live-tracking," tracking close to real time, which is how many stations have operated during the pandemic.
And what, specifically, is "immediacy" in a music format outside of AMD?
"Relatability" is part of the jock's personality. The person who wastes 95% of a shift waiting for songs and stopsets to end is going to be bored, sick of most of the songs, and hoping the shift ends soon. With voice tracking, one can keep up the enthusiasm, build break-to-break momentum and just have more fun.
Movies are not filmed in real time. They are done in disjointed pieces, where a scene near the end may be done before the opening one. Actors don't wait around on a set for their scenes to come up; they just do their bits and pieces and don't show up for the parts where they do not appear.
Bean counters love the idea of paying somebody one hour for a four or five hour show. Perhaps giving live and local talent more opportunities to entertain than the canned station promo voice will help them stay engaged while they do a show, keep up with local weather & traffic, interact on social media, and scan multiple sources for "what's happening now" while they keep up with the latest news on the artists they're playing.
Actually, management looks at who the best talents they have are, and use technology to optimize the use of their time. The rest are SOL.
The same thing happened when the FCC eliminated a lot of technical rules about licensed operators at directional transmitter sites. People who sat and watched the transmitter (most being told "never touch it, just watch it") who had a meaning less FCC license lost their jobs because technology made systems more stable and equipment better able to manage transmitter compliance.
Cart machines finally eliminated the need for board operators who assisted DJs, making "combo" operations possible everwhere unless the union insisted on antiquated procedures to protect unneeded jobs.
Today, the jock does not have to load carts, cue records, hit a button for each sounder, spot and song, follow a music log, pull music carts and lots of other stuff. So they sit and wait for that "uninterrupted ten in a row" music sweep to end, bored out of their skulls, to talk a few times an hour.
I will say that the one missing element is the ability to do listener interaction, those "fake" instant requests and the like. I have mixed emotions here, as the value of requests in an era of instant on demand music services ("Alexa, play Brown Eyed Girl") is minimal and contests can be done with the insertion of an audio bit of the winner by a promo staff member. But, overall, a skilled voice tracker does a better show that one where 90% of the time is wasted "waiting" for something to end.
Not having to hustle records, carts, or CDs isn't the problem with keeping talent engaged. Having them do a live and local show while VTing multiple out-of-town markets is.
It's better if they VT all of them.
And, today's listener does not, outside of some morning shows on some stations in some formats, care at all about "local". We are in an Internet world, where our Facebook or other social network site has no foundries or borders and where "local" has pretty much zero meaning unless you are over 50... or maybe 60.
Trying to sell "local" today is like a car dealer in Phoenix pitching those heaters you can start from inside the home before you get in the vehicle.