Probably because insect-food will be heavily processed (with all the downsides that brings) whereas things like grass-fed cow is more organic.

So the parasites (food and pharma industrial complex) want plebs too eat ze bugs while only the wealthy can afford ze real superfoods.

For me, part of the negative perception is that it feels like it's being pushed by a political organization, based on faulty premises, rather than growing naturally out of consumer preferences.

I see no problem with people choosing to do it...