My first camera was a second hand CL and I loved it very much. Meter failed around 1988. that's not fifty years after production -- more like 15. These cameras are great if you like the size -- beautiful bright viewfinders, really lovely cameras but it's pointless to deny they have a meter problem. The fact is well known and loooooong acknowledged.
The other interesting aspect of the CL is that it was introduced along with the M5 and with the 40mm lens it was both a discount M mount camera and real competition, albeit high priced, to the many really good fixed lens RFs (Olympus, Canon, Minolta, Yashica, etc) that were so popular in the early 70s. The CL sold so well that it wrecked M5 sales. Leica decided to suspend its production, ostensibly for this reason, but the M5 still didn't do well, and it was basically decided to end all M production and concentrate on the R cameras. The ELC people came up witht the M4-2 and it limped along at healthy enough levels, improved by the M4-P, to keep the M going. Now opinions are divided -- whether the CL was a great money-maker and beautiful design to throw at the massive fixed lens RF market, or a mistake that undermined the pricier M series?