I see there are a few pirates in the Malacca Strait but they are small-scale operators picking off a few small coastal traders, not on the scale of Somalia. I wouldn’t think they would risk going south to Belitung in the middle of a massive air-sea rescue operation crawling with coastguard, police, navy and air force on the off chance of picking up some tourists’ wallets though
There might be a small window of time to go in (maybe posing as fishing vessels which they might be already), grab any floating plunder, then exit. But with a huge salvage/rescue effort descending on the site, not for very long.
You know, honestly you raise a good point about there being too much heat right now. The thieves would be too obvious I reckon but I try to never underestimate the level of human larceny.