They took the baddest bad guy of badguyness (Vader) and turned him into a whinny emo kid.

For actual points of "that's fucking stupid".... take a look at this map. This is canonical... I've marked the locations of Coruscant (above galactic center,), Naboo an tatooine in red.

I've marked more than a few locations in which they could have gone instead of Tat that would:

1. had what they needed,
2. were significantly safer than tat,
3. would have been able to use (or at least change out) republic credits.

but, no. Tatooine. which was a remote, useless dustball that only had it's remoteness as a positive aspect (and that only to criminal elements.)

of the places I marke, Eriadu makes the some sense. It's large enough and important enough to have what they'd need- and being on a busy trade up makes it more likely that nobody would care or notice their presence.

On the way to Eriadu, however, you also have Sarrassia an Sollust, both of which are heavily built up word's in the republic, and therefor make some sense too.

Christophsis is another world that is a major republic world an was quite built up. You'll find that they probably passed through on their way to Tatooine.

if you're thinking, 'hey, but the trad federation is everywhere!', its rather unlikely that any of those three planets have an active blockade looking for them, and even less unlikely they'll take an active effort in that conflict. If you find that unconvincing, fair enough, lets got to Pantora. Republic world with reasonable people on it. rather in the middle of no where, off the beaten path an fairly technological. They would at least have been able to get passage to Coruscant, even if they had to leave the shiny thing behind.

Which, they probably could have just jumped a passenger liner off Tat, too. details, amirite? Or they could have sent a coded concealed message to the order. gotten a jedi ship out there. all that.

That is the level of detail being made in the stories. Their hyperdrive is shat to hell, but hey, they make it entire sectors away, an chose to go limp someplace that is arguably worse than the place they left.