Someone help me understand why people go for VOO over BKLC

https://preview.redd.it/k3jynqawzfde1.png?width=1905&format=png&auto=webp&s=ed18f6510260dcbc64491065f36647821243cb8c

From my basic knowledge of stocks, both ETFs track the top 500 companies. The only difference I can see is that BKLC has 0 expenses. Thus, I don’t understand why people would chose VOO over BKLC? What am I missing?