Not just insects. Where I used to live even birds had left. A decade of stronger regulations and cleaning the closer by river made animals come back. And the river started to look less like a sewer and more like a river. The pollution that kills insects is not good for humans either.
On a side note, I noticed after the pandemic began, the birds began starving because they started eating out of our dog's bowls of food.
We feed crows in our area peanuts and when neighbors complained of crap on their cars we stopped for a bit, but they were really aggressive in asking for peanuts. Sometimes there are 10 of them on the wires near the street. They follow my wife home from a main roost a few blocks away--they seem to recognize her in her car. It's unclear if there's a connection to the article.