Soaring Empire euthanized - question

[Merlinsky]

https://www.bloodhorse.com/horse-rac...soaring-empire

Is there something I'm missing here or can someone elaborate on the need to euthanize vs. pension? I can't tell if there's information they're not providing or if it's obvious and I ought to know this about a blind stallion. I can understand not wanting them to get kicked by a mare, but I'm still confused about why he would have to be put down. Is it anything specific to Soaring Empire's situation? To blind stallions? Insurance related?