Keep in mind it's a Ham talkie, Not a commercial or a Navcom radio. And UHF Cb as it used to be called is Not on 477 mhz. unless you're Not in the US , Now known as GMRS does Not use Dmr. Only Analog FM. At least if you brick it, you didn't blow a wad of cash on it.
Generally everybody is well aware that the radios are 100% ham radios and nothing else. Of course there are one or two "special" people who don't understand this. UHF CB is (or was) the name used to describe our local AUS/NZ services and the US versions I've always referred to as FRS/GRMS. And other places in the world with more specific descriptions.
Here yes UHF CB is analogue. There have been a few people running P25 simplex on it for ****s and giggles. There's no reason why DMR also can't become popular, it's more just the management or things like IDs and groups etc. Not something I'm really familiar with yet.
We have a very high density of morons on UHF CB channels and you can of course imagine all the ways it could go wrong, or right.
Then there is reality: UV5R radios are already very popular and the UHF CB community has supported programming of the radios very well for noobs and for the most part they get used on our 80 channels with very few problems. Most people are aware of the legalities which aren't enforced and were only ever in place to make the use of the service fool proof. Now days the type approval that acheived this is more of a protection for the big companies like Icom to charge $450 for a radio which a $50 Baofeng can also do. Yes we're well aware of Icom's quality, but the compliance no longer protects the service, it protects those who can afford to pay.
For me personally, being able to use my ham radio for UHF CB and meet the standard in every other way is ideal. One radio does both.
In the sports flying community we can have european and japanese pilots using 2m as their chatter frequency. When they come to Australia they continue to use 2m illegally. They could buy a $400 UHF CB for the short time they are here, but if they have a baofeng, it's pretty easy and much better for everybody if they just programmed in a UHF CB channel. Everybody is a winner.
But things are changing in the sports flying community. Locally we all use UHF CB. We talk, air to air and air to ground and often there can be over 200 people across several channels. There is a push to get this "air traffic" into the air band. Of course having done this 30 years ago might have been desired but costs...
Worse still is that there isn't any real need for these slow moving sport aircraft to make calls. It doesn't hurt when it's just one on a CTAF, but radio channels become more congested than their sky. Carrying another radio is more weight and more things to physically go wrong.
Monitoring the airband so they can hear the fast moving traffic while being able to talk UHF CB to each other over a very short distance in the air is the goal. You can also see that being able to TX airband would be handy, but it's really not that big a deal. They're trying to avoid air traffic and not make unnecessary calls.
And at the end of the day, you don't want idiots to have easy access to airband even though that is kind of already the case. The legit demand for it is there and if the chinese decide to make it happen, already having a plan to manage it will help prevent problems while facilitating good spectrum use.
For me 477MHz TX and Airband Rx is good enough. Having that in my ham radio makes it all even better. Airband TX is a feature I'd legitimately use in a similar way to 477MHz. And digtal modulation gives me something to consider that might have unforeseen benefits.