If we still numbered just a billion or so people, I wouldn't be super concerned about my dogs eating human-grade meat. Traffic wouldn't be too bad, either... but we don't, and I think alternative protein sources is a cool concept.
Remember, we humans numbered under 1 billion for almost all of human history. From roughly the industrial revolution to now we've gone from just 1 billion to now nearly 8 billion. A billion is 1,000 million... it's a whole lot more humans! And, with humans come our companion animals- dogs. More and more of us are keeping multiple dog these days, too. I'd like to try to reduce my impact as much as possible. I'm cool with cricket protein powder and with my dogs eating bug protein if that makes a difference. Especially if it could be less expensive.