Comment by zie

Yes, but basically nobody uses either of those things. Some vendors like Redhat enables some of it by default, but when people have issues getting software to work, the first thing they are told to try is to turn all that stuff off.

Which means in the real world, the likelihood of that stuff being on and secure is fairly low, but not zero.

With landlock, pledge/unveil and similar tech, the developers of the software write and configure it, it's on by default and probably can't be turned off(or at least not easily).