The problem just isn't irresponsible breeders its also uneducated buyers. I think some buyers look at these minis as real cute, cuddly little horses and most look for the cheapest one out there. The thing is minis are still a horse, they cost the same for upkeep as a big horse, they can also be just as dangerous as a big horse. You have to treat them the same respect as you would with a big horse. There are still some people out there that will go buy a big horse to train up when they are inexperienced themselves. Things is irresponsible breeders are in the big horse industry as well, there are sale barns out there where you can buy a big horse for just $100 and people will buy them thinking they got one heck of a deal when in reality they didn't. So the important thing is to educate buyers for big or small on how to look for a responsible breeder.
Another thing is us breeders need to take responsibility in the foals we produce. We need to be educated in conformation and what to look for and what we should avoid, and we need to take it real seriously. Also we need to geld more, I've seen too many stallions I would love to own but as geldings. Not only are we responsible from the moment they are born but to the day they die. After all you are the one that has created that foal for your purpose, whether it be to show or to sell or whatever your pupose is to breed them for. You also have to be responsible on selling them. We can't sell them at give away prices anymore, its just hurting the breed in general. If you can't afford to keep them then you can't afford to breed them. Hold on to those foals til you get the price you want. Train them up and make them become respectful compainions. Either for show or the perfect family pet. We also need to communicate to our buyers, answer any questions they have, ask them questions, invite them to your home to see the horse in person.
Another thing as breeders we are responsible for keeping up with vaccinations, trimming, deworming, encourage buyers to do health checks. Also we need to keep up with registry paperwork. Its important to breed registered stock. It doesn't help the industry very well if people continue to breed unregistered stock. It can lead to more unwanted horses.
I've made mistakes when I first got into this breed, I've met some great breeders and met some not so great breeders. I've purchased some not so great horses, and some that have done well in the show ring. I haven't bred the best foals in the world, I'll admit that. Thats why I've stopped breeding and just showing my 3 geldings instead. One thing I don't regret is I've gelded more colts then I have bred. I would say my experience is due to being not educated. Do I know it all no, I'm still learning, but I would like to help someone not do the same mistakes as I have.
Another thing I've find amazing is it seems like every farm has to own a stallion(s), I've had own them sure, but don't think I will ever again. Breed for the best, send your best mare to breed to the stallion you like, if more people did this less mares would get bred.