There's a couple of fallacies going on here.

One is confusing between groups and individuals. An individual (e.g. the OP) can have planted several saplings and can thus point fingers (id one holds with these silly heuristics about who is allowed to point out bad things).

The other is that the state of saplings in the USA is irrelevant to whether or not old forests should be burnt down in Brazil.

Well of course. He was attacking Brazil when the US is a far far far worse polluter, so since it wasn't a good-faith debate in the first place, I felt a fallacy or two couldn't make things any worse.