The Vespa gang not only had shiny rides and fancy clothes, they also have voluntary cybernetic transplants. The "sharpshooter" with the cyber eye even explicitly tells Fett at the end of the episode that he *paid a lot* for that eye. But he and his gang are supposed to be too poor to afford water, thus being sympathetic in their actions. Ridiculous.
BTW, the notion of there being an implied logic that stealing water was paying for their expensive, polished, and well-maintained stuff is laughably absurd. The water monger even told Fett that previous daimyos had not allowed any stealing of his inventory on their watch. So, did these cyperpunk dweebs get and mod their Vespas, and also make themselves cyborgs, all during Fett's one week on the throne? GTFO.
If stealing a week's worth of water could pay for all of that, just imagine how many of those people lining the streets would've been rushing that big water tower that came crashing down during the lame chase scene. A water monger would be living like a king.
The complete disregard for plot logic would be fine if it was limited to this Vespa gang/water monger storyline, but the lazy writing has plagued the entire show thus far. There are countless examples of it. All the rationalizations for Vespa gang contradictions fall apart just by paying attention to the stupid story itself.