I can't really understand what you are trying to say here or which of the points I made you are trying to answer. "If you don't like it, self-restrict yourself and don't use it? As in you, a sentient being, choose.
So never use Jaheira as she will benefit from the multiclassed caster change? And also never use all other companions that have the changed multiclassing? Ditto for all other multiclasses companions or companions with changed ASI? "Just don't use it" doesn't work when the game actively uses it for and against you.
