I agree with you about the cruelty of animals although not that clued up about horse racing as it's not my thing I absolutely abhor greyhound racing the way they are treated is sickening.
Regarding closing down discussion that seems to be the way of the world only one train of thought is allowed otherwise you are "cancelled" George Orwell saw it coming years ago.
We allow all trains of thought on here but in the right topic. This one is about the horse racing at Cheltenham not about other aspects of racing, that can be discussed elsewhere by someone starting a topic.
We don't close down discussion anywhere, we allow it to carry on until people seem to lose the ability to discuss like adults and it descends into playground bickering.
We stopped the politics section for that reason as it takes more time to moderate those sections than anywhere else and all the mods/ admin on here have lives away from this forum so don't want to spend every minute we do get on here sorting out all the grief that has been caused.