I didn’t imply you do, but I have never heard of the rule.
I worked as Marine Advicor for an oil and gas company the last time I had a “long term” job in Indonesia. (1 year in Balikpapan and Handil)
I have had many short term assignments in Indonesia without any problem up to the age of 73.
PS>That did not involve going Offshore by helicopter, or being signed on any ship, rig or boat though