There certainly hasn't been silence dd, not on here anyway, where it has been debated quite a few times over the years to my knowledge.
As regards stunning the animal first this does not always happen I'm afraid and it is disgraceful that our supermarkets don't label their meat so that we know exactly what slaughter method is used. I think is was Naznomad aka Trimesaurus who posted some horrific pictures on AB of animals supposed to be stunned first but weren't.
I do eat meat and have cut down a lot over the years but I do try to ensure the creature has had a decent life so buy free range etc. M&S sells non Halal lamb through their West Country range I have discovered so had some the first time in ages recently. I'd like to cut out meat altogether eventually because of the cruelty associated with all methods of slaughter. Respect to those that have managed to do it.