Examples of arguments against the common sophistry of indoor cat keeping

"Cats' freedom and feral habits should be denied to protect them from accidents, injury, disease, and crime."

1.You argue from the extreme and false premise that "cats die when they go outside."
If "cats die when they go outside," then why aren't cats outside extinct?
Can you answer which is more likely, cats that stay outside and don't die or cats that stay outside and die?

There is a lack of evidence for the probability of cats dying outside, what percentage of the total, and what percentage are actually dying.

The confinement extortionists lead us to the false dichotomy of "life (confinement) or death (freedom)" and assume that life and freedom are interchangeable conditions.

2. Cats can be protected from accident, injury, disease, and crime without confining them.

This can be done without compromising longevity and freedom.

Balanced longevity, safety, and freedom for cats can be achieved with specific improvements.
Either educate drivers to drive safely so they don't run over and kill cats, or call for a change in the law to make the killing of animals by cars more severely punishable.
Once criminals are out of town, cats will not have to be confined to their homes. What is needed and should be the top priority to deter abuse crimes is prompt investigation and severe punishment.
If they are injured or sick, take them to the hospital. That is what veterinary clinics are for.

”We don't want more unhappy cats."

Cats that are surgically deprived of the possibility of producing offspring and are confined for life are even more unhappy.