Well, yes, actually! It's really not important enough to get all indignant about!
I'm not indignant. I don't know why you inferred that I was.
I just think that commentators have a job to inform as well as add colour to the images. They're supposed to be experts, not just someone who can make a noise with their mouth for six hours - especially since cycling is becoming ever more popular in the UK and there are many new spectators to the sport. If they're being confused by commentators who mis-identify riders, the race situation, speculate inaccurately and miss the key points in the race, how is that beneficial to anybody? You might as well turn the sound down and listen to the archers, if you're just after irrelevant background noise.
There are plenty of good commentators available such as Rob Hatch and David Harmon, who, for reasons which escape me, are down the pecking order but do a much better job.