It's almost all about resource allocation. We can easily support a much larger population, but we have so much waste.

If we carry on this path we will be eating bugs and people will still be starving while ecosystems continue to collapse. It sounds like there is no net gain, IMO.

Yeah, I don't get this. The bad thing in this sentence seems to be emphasizing the eating of bugs. I could write the same sentence and say corn instead. I still haven't seen a reason of why eating bugs is a bad thing, besides you just thinking it's gross. I eat raw oysters. Gross is relative, not intrinsic.

The carrying capacity of Earth is based on how efficiently we use resources. We could feed everyone on earth today if we didn't have waste, and we aren't even using all the arable land that's available, let alone using it efficiently. Farming bugs would easily multiply our efficiency.

I can only see that as a good thing. More people means more ideas. More ideas mean more innovations and things that could move us forward. I see Humans, assuming we survive the next century or so, as a multi-planet species. If we can get to the point that life as we know it isn't stuck to one rock I see that as a good thing to seek. If we have more innovations, that can only speed up that process and increase the chance we make it.