I wont go into why as there is no excuse.
However, the bigger concern now is the rescue,
No, the bigger concern is *not* the rescue.
The bigger bloody concern is that, even though there is more than adequate evidence that the owner of these horses neglected them beyond any defensible level, *you* still think that people who said "enough!" are blameworthy.
Just. stop. now.
This rescue repeatedly shows the same 5 horses for shock value and conveniently does not include pictures of the other horses. The other horses just so you all know were in good shape with the feet done.
That's like excusing a horrific cases of child abuse by saying 'well, they only tortured and abused the one foster kid--their own children were fine".