The discussion established that while the B-2 may occasionally be detected by some radars, its stealth technology reduces the radar cross-section of the B-2 to the point where radar tracking of the requisite continuity and accuracy is impossible.
Had the early problems it experienced fatal crashes, shortfalls in initial radar cross-section performance and other design problems been made public at the time, the naysayers might have succeeded in preventing the United States from having a Stealth fighter-bomber in the arsenal when it was needed.