Meh... after not more than my first month into D this syntax grew on me and now I just use `1.writeln` everywhere. More than a few years later, I can't think of a single issue this has ever caused me.
UFCS as a concept is fantastic but the one hangup is that D's language server implementation by the community and
its IDE integration can't handle it because of the complexity.
It's possible to implement, because Nim's language server handles UFCS, but atm D's doesn't do it (it's written pretty much by one people)
So personally I avoid UFCS except for very simple/common function like "to!" because it breaks the intellisense for that call.
Though if I knew the language inside and out probably I wouldn't care.
It's still my "favorite" language.
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SIDE NOTE: This single person wrote the D lang server, and has maintained it, written and maintained the VS Code extension, and other fundamental tooling + libs for years.
If you use D and feel like sponsoring someone, consider sponsoring them, or Rainers (VisualD), or the maintainers or LDC or GDC, also single individuals for the most part.
The language server doesn't do it because it's only a parser whereas making UFCS work properly would presumably require a full semantic analyser. By no means impossible to do, just no one has taken the plunge yet.
