Before New 52 butcherfest-a lot of those guys coexisted even if they gave up the name-they got another one.
Butcherfest happened when the replacement-Wally, John, Cassandra Cain, Jaime Reyes, Kaldaur and Stephanie Brown-go more popular than the originals. The Silver Age Legion was NOT going to have that.
It is made worst when guys like Simon, Jessica & Fake Wally are pets for certain folks so guys like John Stewart get buried below DC HQ instead of getting War Machined. Or get made Toxic like Cain & Brown.
Batman at least had it right until the Batgirls.
What was done to Wally was flat out insulting.