I don't think the final paragraph on why it wouldn't pop is a compelling argument. While I don't actually think the ant would explode - saying some ants live on mountains is not an argument against it. The explosion would occur from the change in pressure, not the absolute pressure.

The real reason is that the small size of an ant makes an effective pressure vessel and the differential is simply not very high. Some species of spiders which actually operate their legs pneumatically are known to fly across oceans high in the air with their silk as a sail.

[1] https://www.cnn.com/2015/07/04/europe/spiders-sail-fly-ballo...