According to [1] and [2], most German plastic waste goes to Netherlands. Moreover, apparently a third of it gets incinerated or recycled domestically. So yes, officials turning a blind eye to developing countries pseudo-recycling plastic waste is a problem, but 1) it's not as clear cut as you present it 2) surely building a few incinerators is easier than reinventing all logistical chains to not use plastics?
[1]: https://www.destatis.de/EN/Press/2022/06/PE22_N035_51.html
[2]: https://waste-management-world.com/artikel/germany-s-problem...