So what is the chance of this happening? Lets look at the list you provided:
- some aren't (C/C++) buildsystems (hackage::bake, bitbake, cake bake).
- some projects are dead (linuxrocks123/bake, openhub.net/bake-build, nsnam.org/bake)
- some projects are almost dead (esrlabs/bake)
That leaves one active project, which is Bakefile, which is not a build system but a makefile generator akin to premake. Bakefile (not bake) has a very different front-end (a bkl file) and different intent, so the potential for confusion is not big. IMO the internet is big enough for two different projects with a similar name :-)
Worst case the similarity in names makes it harder for me to get traction, but that's ok really. For me bake is a means to an end, and by no means the most important thing I'm working on. Would I enjoy it if people adopt it? Sure. But it's not the end of the world if that doesn't happen.
Now, granted, only(?) seven of these are build systems proper...