SIP is a feature that protects you from malicious actors with root (admin) access on your device. After they've encrypted your photos and drives and changed your passwords, it prevents them from making your machine unbootable by deleting or altering system binaries. As a side effect of this protection, you give up certain freedoms to customize your system.
Don't disable security features because of random comments from randos.
Also, don't install shit anywhere but your home directory as you unless you want to break your system in an irreparably, unmaintainable, or unsupported manner.
If you're using sudo, you're already doing it wrong.
> Also, don't install shit anywhere but your home directory as you unless you want to break your system in an irreparably, unmaintainable, or unsupported manner.