
They are gorgeous I cannot imagine why in the first place. My thoughts:
1) most unknown mixes are chocked up to 'border collie mixes-I laugh at how BC's are the 'fluzy's' of the dog world as almost all mixes are BC mixes.
2) high energy-they are obvioulsly high energy so people don't want the work.
My dog Max was a pb BC and Molly was a mix. TBH they are not for new dog owners but they are wonderful dogs-high energy of course but how hard is it to tire a dog out? I think, though never have owned one, a lab is much harder. And though cute not half as smart!
I also think too many people decide they want a smart dog (not realizing the dog will outsmart their dumb butt) and get a BC only to rehome when the dog figures them out. I'd say honestly unless your a brilliant dog owner (like you!) then BC's are something to be avoided for most sadly