He's technically right but this is disingenuous as hell.
Humans are "suppose" to be active foragers and hunters. But we also evolved to hunt and kill prey animals, forage for plants, fruit, etc.
Not sit on our asses arguing with teenagers on tumblr and eating reese's peanut butter cups.
the OP of the post in question is 100% correct. Three meals a day is excessive if you don't live an active lifestyle, especially with how much fat, sugar, and calories exists in food these days, you don't need all that much to meet your caloric requirement.