I disagree I believe these guys added another layer of depth to the Attitude Era at the time. Let's face it The Rock, Austin, and DX were all entertaining at the time but, for the most part, the idea of technical wrestling was thrown out of the window.
Bringing The Radicalz, as well as Angle, Jericho, Taz, The Dudleys and push of Edge/Christian and The Hardyz probably added a bit more longevity to the Attitude Era. Since they brought about a fresh coat of pain in the Attitude Era.
And I wouldn't say Benoit and Eddie Guerrero didn't do much either. Benoit was working in high profile feuds with Jericho, Kane, Undertaker, The Rock, Austin, Angle, and Triple H before his injury. Eddie Guerrero was in the mid card but was given an entertaining program with Chyna.
I think the only one who was lucked out was Perry Saturn. I'd say, at least, Malenko was given a prominent role backstage.