1 point
A deb is just a zip file that gets unpacked to where your binaries go. A shell script you curl pipe into shell could contain literally any instructions
2 points
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Binary packages have scripts (IIRC for .deb they are preinst/postinst to be run before/after installation and prerm/postrm before/after removal) that are run as root.
BTW the “unzip” part is also run as root, and a binary package can typically place stuff anywhere in your system (that’s their job after all)… even if you used literal zip files they could still install a script in ways that would cause the OS to execute it.
1 point
