Debian is a large, complex operating system, and a huge open source project. It’s thirty years old now. To many people, some of its aspects are weird. Most such things have a good reason, but it can be hard to find out what it is. This is an attempt to answer some such questions, without being a detailed history of the project.
I was surprised to learn they build all dependencies themselves. This must be an absolute killer amount of work.
Do you have a good ressource to learn the differences between Mint and LMDE? I'm considering making a Linux partition to work more efficiently (Blender, Krita, perhaps Kdenlive), and I'd feel a tad safer knowing the distro I choose is not based off Ubuntu.
I'm not sure about resources but you could try the Debian website for info about Debian 12 which LMDE 6 uses