The reasoning behind this was that there were some players who disliked DFCs, a number of them being Wizards employees, and they were worried they'd be a colossal flop
There are plenty of ways to give creatures double strike in Jund colors as well, allowing for even more infect damage to hit
The second reason is to have a place where Wizards can reprint cards that come from sets and Secret Lairs that are part of Universes Beyond with Magic-themed artwork without impacting their scarcity too much
Fantasy illustrations from 400+ Artists Waterspout Warden Jackdaw Savior Fountainport Raccoon Rallier Portent of Calamity Beza, the Bounding Spring Kitnap Bonebind Orator Jolly Gerbils Scavengers Talent Valley Flamecaller (Variant) Bushy Bodyguard Daggerfang Duo Stocking the Pantry Dragonhawk, Fates Tempest (Variant) Magic the Gathering is TM and copyright Wizards of the Coast, Inc, a subsidiary of Hasbro, Inc
Seriously, he seems as invisible as a middle-aged balding man in a white tee is at Home Depot