When I search for 80D takes pink pictures, your post is the only result.
Maybe you can post some samples of these "pink" images?
Is something wrong with your camera, maybe, but lack of action means you'll never know. Costco's return policy is liberal to a fault.
If you want us to try and help, tell us more about the lenses and shooting conditions. What memory card you are using, etc.
Are the images pink when you review them on the camera's LCD?
Are all of the images pink, or just some?
Have you tried shooting with a different card?
Have you tried resetting the camera to defaults and shooting auto in standard daylight?
Nothing has happened "so that so many cameras are garbage from day one of purchase". I've had 4 bodies in the house over the last 3 yrs. 2 were Rebel and FF. Neither had issues.
As I said, something might be wrong with your camera, but we can't try and help if you won't take some steps to help yourself.
There are a large number of extremely knowledgeable users here, and Canon Mods that have pretty much seen everything. Problems, issues or photgraphic result from whatever. If you came here to rant, ok. If you want help, then you know what you need to do.
Bay Area - CA
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"My new 80D purchased at Costco as a bundle with a nice pair of Canon lenses has always taken pink pictures. I seldom get good photos from this camera."
What exactly is "a bundle with a nice pair of Canon lenses" ? If the "lenses" are screw on to the real Canon lens, they are the problem. You need to return it to Costco or deposit them in the trash bin.
Here is the facts, the 80D takes outstanding pictures when using Canon EF-S lenses. This is true for the many thousands upon thousands of people that own them. That makes yours out of the norm. Is it possible you got a bummer? Of cores, in that case you need to call Canon 1 (800) 652-2666. If you bought genuine Canon USA gear, they will make it right for you.
Our general rule around here for new buyers is to not buy any "camera bundle" and make sure it is genuine Canon USA gear.
" Is Canon going to admit they have a serious problem and help us besides telling us to service a camera?"
I agree there is a "serious problem" but where that serious problem lies is the question.
"My new 80D purchased at Costco as a bundle with a nice pair of Canon lenses has always taken pink pictures."
I just looked online to what Costco offered, and I only saw the 90D with the standard EF-S 18-55mm IS STM lens, SD card, and a camera bag that looked like a sling or small backpack. I did not see the 80D, at all.
I am not a fan of buying big ticket items a big box stores. Returned items frequently find their way back into inventory to be resold to the next person who comes along. I suspect that this may have happened to you. I buy all of my Canon gear online either directly fron Canon, or from B&H Photo Video in NYC.