Chicken keeping is "trendy" now and an unscrupulous breeder or owners will try to off load sick or failing birds especially at auctions to unsuspecting people.
I think you've hit the nail on the head Aunty - as soon as there's a demand there will be people willing to move in on it without the history/background to know/care what they are doing (remind me sometime to tell you the story of the Farmer's Market and the 'freerange' chickens ...!!).
But it also worries me that because it is now 'trendy', lots of people are buying a couple of chickens without really realising that they are living creatures that need a lot of care and attention (I speak, as you know, as a very new chicken keeper myself, so not throwing any stones :? But I have had rescue & pedigree dogs for years, a rescue cat, and lots of 'transient' small animals along the way - so I'm used to the fact that keeping animals is a pain most of the time, no matter how much we love them).
I have huge respect for the guys at Omlet and if they hadn't invented the Eglu I probably would never have realised that I could keep chickens in my back garden (even though I didn't actually buy one in the end - sorry Aunty!) - but I also think that they have played a big part in making poultry keeping aspirational.
I know there are people who would never have thought of keeping birds before but who would now see chickens as a pretty accessory for their garden and who don't necessarily want/know how to deal with the various hygiene, health and welfare issues that any domestic animal brings.
And because even the reputable breeders understandably don't think of the birds in the way that, say, a dog breeder would think of their animals, no-one checks whether a new keeper has the right sort of housing, or even the most basic understanding, necessary to keep birds healthy.
This forum has been a fantastic source of information & support for me; unfortunately not everyone buying chickens now will access this sort of information when they need it.
Sorry Foxy! Didn't mean to outrant you!!!