The same argument can be said of most, if not all, of the western countries whose primary ecosystems have gone extinct by mostly the same reasons. How come then that when the developing nations in the global south do so, they're short-sighted and ignorant?
Yes, Brazil has the sovereignty to protect the Amazon. But one also has to understand the political and economic pressures exerted both internally and externally.
Brazil was responsible for ~20% of the word's beef exports in 2018 [1]. Who is purchasing that beef? What trade arrangements are incentivizing this activity?
This is not to justify what's happening in the Amazon. This is to point out that the situation is more complex that being "short-sighted" and "ignorant".
[1]: https://www.ers.usda.gov/amber-waves/2019/july/brazil-once-a...