yama? ptrace scope? namespaces? selinux? apparmor? of course depends also on system defaults, but then why I cannot dump ssh-agent process from same user? oh

yama? ptrace scope? namespaces? selinux? apparmor? of course depends also on system defaults, but then why I cannot dump ssh-agent process from same user? oh maybe that's also the reason why the move to the kernel level in general? or that's not necessary with different privileges and they could stay on user space without taking over kernel? (insert here philosoraptor meme pls) again having low leve drivers from external corps that could ready anything anytime from my system and exfiltrate without me even knowing is even more scary than running a recent microsoft os! and should be avoided if possible!