The multi-user function will be relevant for the security of sites to isolate processes and access to files at the level uid = 1000 (oneuser) gid = 1000 (oneuser)
As a Linux system administrator, it is easier for me to implement security regardless of the panel, but for users it will be relevant. Now I am setting up Selinux and Aparmor security profiles for working with projects using aaPanel. Who is interested, write!