I know Brett Somers was on at least one week of episodes and that Charles was on a bit more frequently as a celebrity player. I also know that Gene Rayburn had been in line to get the gig until I think it was Entertainment Tonight made mention of Gene's age at the time due to a Happy Birthday announcement and that ultimately cost him getting the job in favor of a younger host in Ross Schaefer (who I felt did a really great job as host by the way!).
Was this ever confirmed or is it game show urban legend, kinda like Alex being drunk on the High Rollers finale? Gene wasn't only a few years older than Barker and TPiR didn't seem to suffer.
Gene himself said this a few times, and ageism exists in show business but...I'll just say that this is probably the version of the story that gave Gene the most personal comfort. I've talked to some people who crossed paths with Gene in the 1980s and I've learned the following...
#1. People who dealt with Gene in the 1980s remember attitude problems.
#2. The feeling among people who had the power to hire him saw his recent work and concluded that regardless of age, his prime had passed.
#3. He tested shockingly poorly with focus groups in the 1980s.
Again, I'm sure that "He's in his 70s? Oh, geez, let's see if someone ELSE can do this" absolutely figured into it a bit, but there were a few other things going on that cost Gene work.