you need mod version v1.0-rc.9.1 for game version B.0.9.3.0
"Modular Cheats Mod" is an old name of Cheat Menu Framework.
"demo_importnewshit" is an example mod from the game dev that is no longer included in the release archives, but is in the mod samples archive instead (and is only useful for modders learning to mod the game)
As for the instructions in the mega tutorial, it's still the same process, but you only need to extract the AIO file to the _Mods folder. If extracting gives you any folder other than "Cheats Mod" in the _Mods folder, you've extracted it wrong.