it's a terrible pattern, extending a god object with useless plugin names and massive option objects are brutal patterns that need to disappear
What would be an alternative to having said god object?
It was never mean to be modular; just to be extended and modified in a per-project basis, just an starting point for fast design development. You are suppose to be able to just use some part of bootstrap but many of this extensions assume that you are using it fully; and also there is no way of handling conflicts between extensions because this are just a bunch of files with no console or control panel to do a proper administration.