From what I’ve read, no. Though it doesn’t solve the fundamental problem of a root process handling untrusted input from a regular user.

The TTY method is IMO better as it ties privileges to a piece of physical hardware, bypassing the complexities of userspace elevation of privileges.

The nosuid mount option disables this behavior per mount. Just be sure you don’t use suid binaries.

Example: sudo or doas. I replaced those with switching to a tty with an already open root account on startup. Generally faster and more secure (you need physical access to get to the tty).