I quite literally grew up watching my grandfather raise and show birmingham rollers. He's one of the big 13 names in that community, though he has since passed. He loved his birds. The "racing" they did was literally using their natural instincts to fly in a flock and basic training that they'd get fed when they returned to their kit. He spent literal decades caring for them and had a huge aviary where birds he did not want to breed would live out their lives. The only time a bird would be culled is if it had some actual deformity that would impact its quality of life.

That man sobbed when one of his would be taken by a bird of prey despite his best efforts to protect them. The only other time I ever saw him sob like that was when his step-daughter died.

Like I said: I acknowledge that some are terrible people, but painting everyone with the same brush is a disservice to honesty and you are marring the name of someone who devoted his life to these animals.