Package: installer Version: Test This is the year 2025 and I can promise you that 99% of all installations are NOT performed from a CD/DVD media, but from USB flash/network or whatever, but NOT an optical media.
But still you have designed the installation for CD-ROM? If I "burn" the installation-iso to a USB flash media and do an installation I will not able to do an "apt update" or install any packages, because CD-ROM is set to be main repository. I have to modify "/etc/apt/sources.list" to get a working system. I'm not saying it shouldn't be possible to do an installation the we did it in 1990, but please design the system to how 99% of all people actually install Debian today.