First of all, I would like to say that my statement shouldn't diminish the achievements of Wagner, Tennell, Bell and co. because they are all great figure skaters.That's not true, at all. Ashley Wagner won 12 Grand Prix medals, and 5 of those were gold medals. She won 1 silver and 2 bronze medals at Grand Prix Finals from 2012 to 2015. She won 4 Continents in 2012, and she won the silver medal at the 2016 World Championships.
Bradie Tennell has won 4 GP medals, since 2017, and a bronze at 4CC. Gracie Gold won 6 GP medals. While Karen Chen hasn't won GP medals, she's won medals at Challengers, as has Bradie. Mariah Bell has won 4 Grand Prix medals, as well as a number of medals at Challengers. There may be more examples, but it's too late for me to look up any more.
I just wanted to say that I understand that the US fed and the american press are pushing Lyu and hoping that she can consistently compete for medals at the big competitions. For decades, the U.S. ladies were always on the podium at the Olympics, were almost always on the podium at World Championships and the Grand Prix Finals. In short, the US women's team was the gold standard in figure skating and by far the most successful team.
Since 2006, medals at the major events have been the absolute exception and there haven't really been any contenders for victory at these events. But when you've been so successful, you wish you could continue those successes again. And when a promising talent is found among the juniors, the hype is all too understandable. Part of the hope is certainly due to the development of the russian juniors. Not even two years ago, there was a discussion about whether Lyu could beat Valieva at the Junior Worlds with her more difficult jumps.