Asmor
First Post
The undead traits are not feats.
Having an armor proficiency feat grants you proficiency in armor.
Armor does not require an armor proficiency feat, it requires armor proficiency. Ditto for weapons. Note that none of the classes specifically give weapon or armor proficiency feats, they just give you the proficiency (and yes, I'm sure there's some class which gets heavier armor proficiency feats as bonus feats later on, you know what I mean).
Having an armor proficiency feat grants you proficiency in armor.
Armor does not require an armor proficiency feat, it requires armor proficiency. Ditto for weapons. Note that none of the classes specifically give weapon or armor proficiency feats, they just give you the proficiency (and yes, I'm sure there's some class which gets heavier armor proficiency feats as bonus feats later on, you know what I mean).