Take a look at Vyal's post history. He was one of the guys selling Chardok pulls during Blue's timeline. No wonder he is so adamant about AoE mechanics. No one is going to deny that by design PBAoE should hit everything around you, and on live in later expansions AoE groups were a normal occurrence. What we are discussing here is written evidence that PBAoE's were not in fact acting like this, based on the official patch notes saying vaguely that they had been fixed. Using those patch notes, in conjunction with other player written information from the era, it seems fair to conclude that in fact there was a 4 mob limit for a period up until that date.
It is very hard to take someone's "memory" as a reasoning for making a change, or proving mechanics in cases like this. Especially from someone with a memory who claims that
magician epic does not come out until after Velious.
When I look at Vyal's post history, and look at the way he has carried himself in this thread, I see someone who is desperate to try and profit off of AoE groups in general. AoE groups in general are bad for the server community, and the 25 mob limit is very necessary to help limit CSR strain.