The idea is people become less social (grouping) if they can just group with themselves - among other more unsavory scenarios

Like you could become any less social as a player of the game EverQuest

Everquest (at least 'classic' everquest) is one of the only MMOs with the need of socializing being a core mechanic of the game, with most classes needing other classes to play; bind affinity, port, rez, invis, merchant for you in a kos zone, etc. There is always a time where you need another player to help you. Allowing boxing makes that mechanic obsolete. Whether or not it is a bad thing is debatable, but P99 has chosen to be on the no-box side of the debate, and this has to be true for everyone. Many other servers allow boxing if that's what you're looking for.

Nah bra just askin' and making jokes

that was a general 'you', and also not pejorative, i'm no witch hunters :p

I would imagine/hope that the staff does periodic 2-boxing checks when "one person" sits in EC while another "person" (from the same IP) adventures elsewhere. That can't be a very common scenario for legitimate IP exemptions ...

Before Velious was released, a single person locked down King Tranix (8hr respawn) for over a week for the only tradeable 20mr item in the game.

Ragefire (cle epic+COFs+more) is killable with 2-3 characters (or one person with a bunch of healing items). You can only spawn him once per lore pearl though.

Spore king (Fungi tunic) is killable with 3 characters. (or at least used to be...not sure nowadays)

Sir Lucan (paladin epic/Soulfire clicky CHx5 any class from inventory) is soloable by any class that can snare or root.

These are just a few examples. You can insert any plat camp into here for this example.

So, You have all these things that can be camped for plat.
Lets say you have someone who owns 13 level 60s across 13 accounts (account trading used to be legal, so 13 is not an outlandish figure imho)

He parks 2 on Lucan waiting for spawn,

4 at Ragefire waiting for spawn (or 3 at rage and 1 at tranix, since hell, you're there anyway)

actively farms spore king in the meantime with the other 6. (cus 6@king is easymode)

Ragefire pops, triggered with a pearl, can't lose unless you try with any 60 tank+CH+torpor [I've healed it as a druid with manastone+1tank+1dps in velious era and still had half mana left] (pearl is replaced later with box13 which has toons loaded with pearls bound at spawn point of rage). Corpse or port w/box13 any lore items beyond what you can hold/use.

Tranix pops, is pulled up to rage room, he's a soloable kill and is nothing for the 4. corpse or port w/box13 any lore items beyond what you can hold/use.

Lucan pops, can be killed practically AFK with a shaman+tank. Corpse or port w/box13 any lore items beyond what you can hold/use. (paladin tank rez ftw)

Fungi king farm in the meantime.

hell, stick box13 on Hadden and lock down fishbones while you're at it.

That's my view on the "negative contribution"

Granted, this is a "blue" perspective, if you play red...well good luck handling those 10 necro lifetap bombs porting your way. (While you're chain bardmezzed)

If you don't think anyone here is willing or capable of doing what I just outlined above...I envy your naïveté.

I just found it funny, after wondering about what boxing could be and how it affected EQ, that it is banned "to keep people social".

I understand the above though ^^^^

boxing is also just not classic because it wasn't possible to run two copies of everquest on the same computer. nowadays you can "multi-box" a full group of 6 on a single computer. Back in the day if you didn't monitor a school computer lab you weren't going to be doing that. Some people did play everquest on two seperate computers in the 1999-2001 era but is was very rare.
now in 2017 it's extremely easy to automate and run several copies of everquest at the same time. part of what made classic everquest great was the "social" factor this enforced and how the game was designed around teamwork.
If multi-boxing was classic somehow I doubt it would've been outlawed here, but it really wasn't classic.

They don't bother doing this because only you have this obsession in thinking all mules in EC are 2-boxed. The premise is dumb and false.

I am sure there is someone that does this, but the chances of it are just as likely as someone 2-boxing for buffs or any other activity on p99.