Yes , true , Brazil does have an enormous number of vulnerable, endangered and critically endangered species other than the spix macaw. I also have no doubt that there is a lot of egotism involved in this project (there always is in any conservation intervention and often in toxic quantities). This is going to be the case for both the Brazilians and the Germans and I am sure both are guilty of doing this.
Regarding the perennial issue of fighting over money / funding and publicity I dont know how familiar you are with the way things work in conservation but in my experience this is a situation hardly limited to Brazil (though it is undeniably a huge problem here). You will basically find the same interpersonal issues of people fighting over finite and limited funding and media attention absolutely everywhere in the world. Here's a thought, maybe governments should be throwing as much funding at conserving species and ecosystems as they are currently at trying to beat the coronavirus ?
Again, there needs to be a paradigm shift within conservation that moves away from perpetuating a vicious and nihilistic cycle of cuthroat competition and towards a much greater emphasis on collaboration. I've said many times on this forum that I believe that this is an enormous existential problem within the field of conservation (perhaps the biggest one in my opinion) and one that only ends up preventing goals from being reached and ultimately negatively impacts the species themselves. Some of it is just part of the human condition and will always be around but that cannot be permitted to become some tired old cliché that both justifies **** poor ethical behaviour and gives organizations the mediocre excuse to shrug their shoulders and do nothing to address these underlying issues.
Change is long overdue and desperately needs to be promoted at all levels from academic / scientific research to field based NGO's and even in zoos. If nothing is changed these sort of situations it will continue to stymie and stall progress in reaching conservation goals by fueling petty interpersonal conflicts. It will also drive young conservationists (who will be desperately needed in the next half a century in the ongoing biodiversity crisis) out of the field for good.