There are other tax exemptions in Croatia that might still make it worth it - especially in FIRE setting.

While say The Netherlands taxes your investments such as Stocks/ETFs (not their earnings/capital-gain/etc but literally just owning stocks/ETFs/etc) - in Croatia those are not taxed after you've held them for 1 or 2 years (don't recall if 1 or 2).

Similar (owning stocks/ETFs not taxed) in Serbia, Malta, Cyprus ...etc.