You are missing the point... It isn't a flaw or a fault. The product behaves as it was intended to by the designers. Try it for yourself, if you don't believe me. If you don't have the camera or have not used someone else's under reasonable shooting conditions (ie. without a lens cap on), then reserve your comments until you have first hand experience.
I, like others on these forums, have actually tested it. As claimed by esi32 in the original thread, the LCD only throws the meter of at aroun -4 or -5EV, well below the accurate operational limits claimed by the manufacturer (like, 24 times less light lower).
First, some people have found that it throws off the metering by 1/3 stop at EVs of 1 or even 2.
Second, I suspect that under stronger ambient light, such as bright sunlight at high-noon in the middle of summer, the meter will be affected at EVs of higher than 2.
Wow you sure have a lot of time on your hands to troll about a problem that seems like you never encountered yourself when shooting.
I was shooting a venue (concert) when I HAD to use 25600 ISO to get what I needed and had no problems with the exposure meter. I used the lcd light quite a few times as it was the first real day on the field of the cam and I wasn't totally used to the settings yet. After being amazed by the pictures I got from the concert that night. I walked around the neighborhood that barely had distant city light glow to light it just to mess around. Again used the lcd light a few times (I specifically remember this because I hardly ever used it in the past except on the first day or so of getting a camera). Again issue never came up or never came up enough that I noticed it.
So is it an issue? Well yeah it's a bug but to go fire and brimstone about it? Are you kidding me?
Canon has already acknowledged it and will find a fix for it. If the box was as bad as you seemingly make it , there would be a lot more issues than this EXTREMELY fringe one.