I disagree, the members of Wu-Tang are for the most part irrelevant in the rap game. Raekwon never sold out or got lost in pop side of things either. He's made a few collabs with less-than-reputable artists such as Bieber and 2 Chainz, but he is not a sellout. The main reason why Rae is considered more relevant than the others is because he actually works with newer artists and has evolved to the point where he regularly releases free mixtapes, which is nowadays the only way to make a name for yourself and keep relevant. The others only release albums every few years, which nobody sells albums anymore anyways, so what's the point? If you've listened to Rae's newer albums or mixtapes, he still has that raw sound, by the way.
However, I agree with you that the Wu-Tang probably hangs their heads in shame at the way rap has changed, since GZA has always had problems with guys like 50 Cent and Soulja Boy, and Meth just hates the South and refuses to work with the new southern artists, who are pretty much the main demographic of rappers who are running the game right now, but both of these points add to the Wu-Tang being irrelevant these days.
Also, not all modern rappers are shitting on the name...
Uhhh not gonna lie, I like that French Montana song mostly for Jadakiss's verse. LOX is actually my favorite rap group, and they've been around for the 90's and now, you can't hate on them. I'm just trying to tell you that rap is changing. It's not about lyrics anymore. And I love Gangstarr to tell you the truth, I listen to anything from 1980's to now I enjoy the entire spectrum of rap, you cannot just hate from the sidelines if you have no say in how the game is changing, which is what you're doing.
Here's one of my favorite songs of all time:
And here is my other favorite song: