Cats kill and eat birds.
Cats kill and eat rodents.
Cats kill and eat lizards/small snakes.
They are cats, that’s what they do that’s who they are.
As with any animal, cats can have their population controlled. IIRC, the human is the steward of the environment according to God. Therefore, have a cat season on feral cats.
There are actually lots of them in our rural area, and yes, they can be a problem. Generally, they are the offspring of pets whose owners maxed out on the number of cats they wanted and then kept the others as “outside cats to kill mice.” I think an outside cat has a life expectancy of about 3 years.
Nonetheless, if there are too many, then thin the herd.