The only point I found that falls under "questionable choices" is :

"If you go looking for compression support in Rust, there's none in the standard library. But you may notice the flate2-rs repo under the official rust-lang GitHub namespace. If you look at its transitive dependencies: flate2-rs depends on (an individual's) miniz_oxide which depends on (an individual's) adler that hasn't been updated in 4 years. 300 lines of code including tests. Why not vendor this code? It's the habits a small standard library builds that seem to encourage everyone not to."
"Even official packages may end up depending on external party packages, because the commitment to a small standard library meant omitting stuff like compression, checksums, and common OS paths."

Which is somewhat valid, but imo it's really not as big of a deal breaker as they're trying to make it out to be.