Firstly, I know that not adding steel on it's own is part of the mod idea. But I can't find any mod that add steel, without any unnecessary things.
Create Alloyed that you suggesting in mod description stuck in 1.19.2 version, while create metal, that can be used as replacement, only exist for fabric.
There's a few mods that add steel to the game, but they are either add a lot of unnecessary stuff, or makes steel too easy to obtain (such as just smelt iron in furnace second time).
May be you can add steel for you mod, with option to disable it in config if other mods are in modpack?
Or make it a separate addon to CBC?
Sorry for bothering you.

Steel is eventually planned as part of a dependency addon. For now, use IngotCraft.