That's not a fair assessment. First off, Webb was relying chiefly on a stock company of players he had known since the days when Dragnet was on radio and who had been solid reliable performers back then and on the B/W version of the show. People like Virginia Gregg, Stacy Harris (whom Webb named his daughter after), Peggy Webber, Vic Perrin, Harry Bartell etc. were all good performers who understood what Webb wanted and played their roles accordingly. The problem was that in the 60s show these faces became too familiar because of overuse, and that wasn't their fault that was Webb's for showing perhaps a little too much loyalty. But don't blame their performances, they were simply doing what Webb told them to do which was to read their lines cold off teleprompters for the first time and to show little emotion. Anthony Eisley was overused too much as the baddie of the week on Dragnet, but he also was a reliable semi-regular on "The FBI" as the New York SAC and proved he could play one of the good guys as well.