What is the problem?
So some people have to turn up their volume. So what?
Virtually all receivers have an easy to access volume control.
It is there so that the user can adjust volume level to the desired level.
Here's the problem.
Many of us enjoy listening to someone else's QSOs, when we are doing something else. I monitor DMR and Fusion while I'm mucking stalls in the barn, and feeding animals.
Someone will come on with very quiet audio. That forces me to drop what I'm doing, and turn up the volume.
Then the next guy comes in with one of the Chinese radios that has the mic gain turned up to 11, sticks the radio down his throat, and yells into the mic. I get blasted across the room, and I have to drop everything and turn it down. Further, that audio is usually muffled, and thanks to the high gain, I can hear every breath, lip movement, the dogs across the street, and his wife gabbing with her girlfriend in the upstairs bedroom.
In the case of digital, parrot can be a great tool to check your audio. Or ask for a radio check.
I wholeheartedly agree that with radio, you get what you pay for. The reason why Motorola, GE, Kenwood, and Vertex charge so much for their commercial radios is that the physical build quality is superior, the radio design is robust, and the units are designed to take a beating in public service. Ham radios from the big 4 (plus maybe Anytone and similar brands), aren't as robust, but the electronics perform well.
The Baofengs, and similar economy radios are not robust, and are designed to be cheap. Some of them work OK, but many don't . They also have horrible specs.
You do get what you pay for.