Euronews fact checked the statement and found that ammunition production may have been approximately four times more than that of the NATO Alliance in 2024. On paper, NATO’s economy is 25 times bigger than Russia’s once again illustrating that GDP measure doesn’t tell you much of anything about the real economy.
It should be also noted that artillery is often used to destroy field fortifications and then drones kill now exposed infantry. So it is pretty hard to distinguish casualties from drones and from artillery.