New MoCT's special rule extending the Druidism attribute to all their spells is... it's more than just one spell worth. The Druidism Attribute is pretty much the only reason to take Druidism.
And if I were to try to fix this issue, I'd do it by removing Shamanism from KoE and/or SE (replacing it with something else, of course) because while both revere nature... Shamanism is kinda ehn.
Also, again, Treefathers have access to Druidism but not Shamanism; there are at least models which have Druidism but not Shamanism.
It is fitting imo for KoE