Short answer, "Yes."
Long answer, "Prestige Classes where the worst design decision in 3rd edition. They curb personification, tend to promote stereotyping, are generally unbalanced and unbalancing, probably cannot be playtested extensively, and represent a step backwards in character creation in that they are much closer to the 1st edition notion that every distinct set of skills needs to be represented by a unique class (Archer, thief, alchemist, mariner, blacksmith, cook...) Third editions flexible base classes, multiclassing, skill system, and feats were designed to elimenate that problem - instead PrC's have made the problem in the extreme cases worse than ever. How many scores if not hundreds of PrC's are out there now? PrC's are an inelegant solution to a rather simple problem. We already have an elegant solution to that problem and its called a 'feat'.
What makes the flaw they represent it even worse is that players have come to see PrC's as being some that they have control over and that taking a PrC is no different than taking a feat or assigning skill points. The PrC's aren't in the DMG for nothing. At best, PrC's are a great way for a DM to create a large organization of identical faceless mooks. At worst, they are an almost limitless buffet where min/max powergamers can load up on front ended, unplaytested power, gain free bonus feats, and in general up thier characters effective CR for a given level."