I think so, in the sense that Rust has successfully translated ADTs and other PLT-laden concepts from SML/Haskell into syntax that a large base of engineers finds intuitive. Whether or not that’s hype is a value judgement, but that is the reason I picked it for the example snippet: I figured more people would “get” it with less explanation required :-)
data Thing
= ThingA Int
| ThingB String Bool
| ThingC
Another way of phrasing my query is that given these are all basically ML-style constructs, why would the examples not be ML? And I was assuming the answer to that is "the sorts of people reading these blogs in 2024 are more familiar with Rust"