I don't have any desire to defend this poor campaign, but wasn't this the first black series Inquisitor saber? I assumed this campaign was the chance to produce an Inquisitor saber, tied to a new character from a new series. So not just a bet on Reva as a character.
I blame the marketing more than the product. Did the Star Wars team do
anything to support this after the kick-off at Celebration?
For example, the main image on the Haslab shows the full ring version, which Reva didn't even really use (except once she used what was obviously the "stunt saber" they had with the spinning tech). This led people to complain it wasn't really "Reva's saber". You could customize it to just the half-ring version Reva had, but that wasn't clear unless you got into the guts of the text.
They should have branded it as an "Imperial Inquisitor" Lightsaber. Your chance to join the Empire in the search for Jedi like the scum Obi-Wan Kenobi. Leaned into the role-play part of it. Then showed how you could customize/display it as The Grand Inquisitor's saber (full ring) or Reva's (half ring) or split into two sabers.
I think the whole "no tiers" thing put people off as well. I think the tiers and the chance to "sweeten the pot" draws more backers. Not sure what they could have done that wouldn't have just been cost trickery (like saving the display stand for tier 1). Maybe they could have added some kind of brass display name plates (Third Sister, Grand Inquisitor, Fifth Brother, etc) for a tier? Maybe some kind of kyber crystal or holocron or something?