I caught the vibes that you speak of. But:
1 - It's Star Wars and you never know what they're gonna say here, but that ship still worked. It would be weird to me to find out it had been crashed for 500 years.
2 - The bigger deal is narrative sense. These 10 planets made currency for the Republic. But when Tak Rennod was operating, At Achan had already fallen into ruin and At Attin in particular was a prize. If At Achan and all the others fell apart while they were still making currency for the Republic, the Republic would have gone and set things right. Presumably they were stopping by on a regular basis to pick up the coin things. I don't think the Republic would have let things get like this. AND during the High Republic, At Attin could certainly have been a good score of plunder, but it wouldn't have been the potential prize it is now. Now Republic credits are particularly valuable because they are scarce. Either because of their melt value or because collectors want them or it is still a workable crypto, being able to present them whenever you need to is a big deal. If he had just hit the place during the High Republic, he could've probably stolen enough to be rich for the rest of his life (something he accomplished without hitting them!), but the Republic would have redoubled their efforts to hunt him down and he couldn't stay and keep getting more. It is still possible, but it is just kind of a complicated story that it was a great score 500 years ago, but oh my goodness now look at it!
3 - I see that Anthony Daniels didn't appear in Mandalorian, Book of Boba Fest, or Andor. He could still get in Andor. He has been in every single movie, even when he couldn't be 3PO and he was in Kenobi and Ashoka. His character (who I don't remember at all) in Solo had the same first name as this pirate, had been a criminal enslaved on Kessel, and got away in a revolt about ...30 years before this and after the fall of the Republic. Fans would recognize him instantly if they saw his face.