When that five horrible minutes involves feeding live male chicks into a grinder, or spraying water up the nose of a downer cow to get it to go to slaughter (and be made into people food)? Yes, I think there's a legitimate public right to know.

When your job is, eg, slaughtering pigs, or swearing at engines, or dealing with abusive customers (or abusive editors I suppose), you might reconsider.

Swearing at engines isn't illegal or morally reprehensible. Animal abuse is.

I don't understand your point. No human lives would be endangered by sparing the lives of other animals.

People wouldn't be as upset if this were just "5 minutes" or just happening at one place. It's systemic and widespread, and for more people to know that it is indeed systemic and widespread, more investigation and exposés are required (even if the abusing parties don't like it). Otherwise people just brush it off saying "this is one isolated instance", "it's just two different places" and all sorts of excuses to avoid confronting the truth.