If you think nobody complains about Rust then you haven't visited HN much recently ;). Heck, Bjarne Stroustrup himself has recently taken to complaining about Rust in papers and talks (though most recently he's taken to referring to it without naming names).
There's a noticeable difference between what you get from somebody like Barry Revzin, who understands C++ and Rust well and has very specific criiques, and from people like Bjarne or Herb who seem to be relying on superficial impressions at best.
