Salad or not, it's the nature of the beast(s), site(s).
This is not the only place you will find what you speak of.
We are the same age, so some of what you say I understand.
Having said that, I might be putting myself down to another level in your opinion, because no, I don't feed my fish other fish at all, but I do feed my snakes rats/mice.
Not for the "sheer enjoyment" of it, but for the "sheer husbandry" of it.
And to go maybe even lower, I kill the rats/mice before feeding.
I don't advertise it, make movies of it, etc., it's just a thing I do to keep the animals I want.