I agree with you, but this was a product of its time.
Indeed, the Walker is now roughly 20 years old which is a ridiculously long time for anything related to computer case design. Even though I did not find it particularly pretty myself, due to its unique look the Walker received a fair amount of attention from the media with pictures being printed in mainstream PC magazines, for instance. Even though not all coverage was entirely positive, for any computer brand aiming to crawl its way back into the eye of the masses a small public controversy is usually a godsend.
The Walker could have been for Amiga what the iMac became for Apple, which too received a lot more attention for its unconventional design than for it its technical specifications. (I can“t say I liked the iMac case when it was introduced either, for the record.)
Without giving anything away, I was present when the case was first unveiled at Amiga Technologies GmbH by Stefan Domeyer. The reasons given for going with this case design was to (1) make it stand out next to other computer models, and (2) increase focus on a different kind of market, in which design aspects drove sales. Turn the clock forward a couple of years and you'd see how this could have played out: set top boxes!
Has there been any computer company who managed to successfully penetrate the market for settop boxes in the 90s and early 00s? Despite all the talk about rise of the settop boxes back then, it seems to have largely remained a mirage for many years.