alt Hacker News> Nathan J. Robinson actually said the quiet part out loud a couple years ago, when he wrote in Current Affairs (a relatively high-profile American leftist periodical) a long defense of suburban NIMBYism.
If we’re thinking about the same essay it’s a criticism of capitalist YIMBYs who are only interested in building McMansions and the like. It is both anti-NIMBY and anti-some-YIMBYs, which seems reasonable to me.
EDIT: Historically, some YIMBYs have not opposed—I guess we’ll call it instead—unaffordable housing. So-called “capitalist” or “libertarian” YIMBYs in particular. Robinson’s article describes this. Leftists are skeptical of “all housing construction makes housing more affordable” arguments, and there’s evidence presented in the article to that effect.
Capitalist YIMBYs oppose McMansions. They're like the central thing we oppose. The whole point of the movement is replacing large-lot-coverage single-family-homes with multifamily. The whole point of YIMBYism is multifamily housing.
Understand: there isn't regulation against large single family homes. You can build a McMansion anywhere you want already. Your analysis makes no sense: nobody needs to organize anything to allow McMansions; they're the regulatory default. But suburban progressives genuinely believe stuff like this! It's a real problem.