If you do decide to use Satoru Umezawa in a ninjutsu deck, it still has an added benefit
It dies, of course, and you get two triggers
The game is over immediately
I assume we turned it upside down (after talking with the artist) as it put more focus on the damage than the creature
Because of the newness of the format, it's really difficult to learn much from these bannings, and things are further complicated by the fact that in the early years of the format, Wizards used a restricted list (much like we have in Vintage today, where you can only play one copy of a restricted card in a deck) alongside the banned list, and while many cards were restricted in the early years (Balance, Fork, Zuran Orb, Black Vise, Land Tax, Hymn to Tourach, and Strip Mine), only two were outright banned
This change was part of a broader redesign aimed at modernizing the games look while improving legibility and visual appeal