National parks, massive non profit animal parks, and well funded conservation teams all need funding and time. Both of those are a luxury in most places in the world with underdeveloped economies.
Across the world in countries living in poverty the environment always takes a backseat. Without a stable economy and stable nation states the outcomes will be far worse.
It’s hardly just either/or.
If anything it’s the mere existence of humans and population levels aren’t going down anytime soon. The fact they engage in trade for survival and to prevent suffering is merely a product of that.
The only way this articles direct correlation makes sense is if economic success doesn’t increase capacity for conservation and humans ability/technology isn’t capable of being at a minimum neutral harm to the wider ecosystem.
But it will always be a balance, that’s just the cards we were dealt being born on this planet. I mean we were already killing thousands of animals and countless plants and manipulating the earth well before the word ‘economy’ was ever invented.