First of all, the gimmick that makes the show different--avatars being on stage in real time--is a fallacy. There is no commercially-available technology that can achieve that or there would be holograms standing in every store trying to sell you something.
The avatars are added in post-production and the judges overplay the false "I can't believe this is happening in real time!" angle. Eliminate that, and it is like any other singing show.
... Well, not quite. Every singer has a sob story about lack of confidence at singing in front of people which makes you feel bad for them. With no way to prove that their insecurities are real, they "nervously" sing backstage, hidden from everyone, but once they are eliminated, each steps onto the stage, belting out a song, with all of the pride and confidence in the world.
Public speaking/singing/dancing as well as body shaming oneself is a real, often crippling fear for millions of people. Very rarely can a single, four-minute performance liberate someone completely, from a lifelong fear, which is how the show presents it, and I detest it being used to drive the "story" as it were.
I will give two stars because, like all other singing competitions, some of the music is enjoyable to listen to in the background while I do other activities.