That has more to do with Microsoft policies than with anything decided by SE as PS2 players only need to use their disks to reinstall the game in case of data corruption. Game starts disk-less fine on PS2/PS3.
[sarcasm]Also I play on Windows too and refrain from using third party tools because I am an idiot.[/sarcasm]
So what if I find myself someday in a server full of PS2/PS3 and two or three black sheep PC players because third party tool users got LM-17'd ?
Yes, I am the idiot here. /cheer