Übel Blatt Manga: What was the purposes of naming the 4 lances of betrayal?
Every hero is praised and loved by people. But it's hard to have many heroes. Don't you think, that if there were 9 heroes, 4 dead of them would actually get even more attention and praise, than rest 5 survivors, since dead ones would be considered as martyrs?

I suppose, 5 betrayers named killed heroes as lances of betrayal, to get as much fame and praise as possible

I'm updating my answer after rereading several tomes.

In 5th tome, 6th chapter, when Glenn confesses to Ms. Gleaa, that 4 lances were not traitors at all, she asks him same question, as you did here. What Glenn answers:


  We were young... Too blind and too consumed with ourselves to consider other options...