Even before we get to the Silmarillion, the appendices of Return of the King are actually already meaty af. (They're also the only place where Helm's canonically-nameless daughter was mentioned in the first place.) And those appendices already blow every lore book Martin's written for ASOIAF put together out of the water, much less these current-year hacks' mangling '''''additions''''' to Middle-earth.
Even before we get to the Silmarillion, the appendices of Return of the King are actually already meaty af. (They're also the only place where Helm's canonically-nameless daughter was mentioned in the first place.) And those appendices already blow every lore book Martin's written for ASOIAF put together out of the water, much less these current-year hacks' mangling '''''additions''''' to Middle-earth.