As far as low environmental impact protein farms go, I personally prefer shellfish. They’re delicious, can survive mostly on algae (which I’d love to become another dietary mainstay), and can be used to clear heavy metals in non-dietary utilizations. Spirulina is delicious as well, but tends not to be a great heavy metal sink.
In the end, I just don’t love the texture of most bugs and I hope sustainable protein farming can branch out more in the future.