At least in my case, I got curious about the strength of /u/dustbunny's denouncement of Godot+C#.

I would have have put it as a matter of preference/right tool with GDScripts tighter engine integration contrasted with C#'s stronger tooling and available ecosystem.

But with how it was phrased, it didn't sound like expressing a preference for GDScript+C++ over C# or C#++, it sounded like C# had some fatal flaw. And that of course makes me curious. Was it a slightly awkward phrasing, or does C# Godot have some serious footgun I'm unaware of?

Makes sense! I think dustbunny said it best: C# is “not worth the squeeze” specifically in Godot, and specifically if you’re going for performance. But maybe that’ll change soon, who knows. The engine is still improving at a good clip.