Wade Barrett, much like many other guys who get pushed like ADR and DZ aren't truly good workers. Sadly there is a lack of good young talent willing to learn from the likes of guys like Undertaker. There are too many Cena's who think they should come straight into gold. Wrestling, in the old days anyway, was about respect. You earned respect and you were rewarded. Nowadays, too many guys don't realize their talent is midcard at best it's just the anemic lack of big named talent due to the legends aging has them on Raw when back before the MNW ended they would've barely been candidates for Smackdown or WCW Thunder.
What the hell are you talking about? Not good workers?
Alberto Del Rio: A wrestling legend in Mexico for close to a decade. Worked very hard to get where he is. He's done MMA, Lucha Libre, and American wrestling, and he's made the transition well. He impressed those in America so much, he won the Royal Rumble!
Dolph Ziggler: Was in developmental from 2004. In 2005, he was brought up as Chavo's cabbie, Nick Nameth. The gimmick didn't work out for him, so he went back to developmental. 6 months later, he re-debuted, as Nicky of the Spirit Squad. The gimmick was annoying but he proved he could work a good match when he held the World Tag Team Titles for months. The gimmick got stale, and he went back to developmental. Another year in developmental, he came back as Dolph Ziggler. His gimmick wasn't that great, he was an average wrestler, and had okay mic skills. 6 years later, he made his gimmick amazing, he has great mic skills, and he's one of the best in-ring wrestlers in the WWE. Not a hard worker, right?
Wade Barrett: He was in developmental since 2005. He wasn't even called up to the main roster until 2009. He's not spectacular in the ring, but he has great mic skills. He carried the Nexus for months. Then after the Nexus and a slump, came back better than ever
This is just generic complaining from an older fan who can't handle the change in the WWE. This isn't the gimmick-crazy 80's-90's. A lot of wrestlers these days are just as talented, if not more talented than those back then.
/rant
Anywho, the only reason Nexus attacked him was to build up Taker/Barrett at WM27. That was dropped, and so was his beef with Barrett I guess.