I’ve been working on c# quite a bit lately, and I don’t think that’s true as much these days. The biggest things remain Microsoft-granted — asp.net, efcore, etc — but I’ve had little issues finding Nugent libraries for random issues like progress bars, weird formats, various excel libraries, etc all community-maintained & provided; my expectations on finding libraries is similar to python.

The biggest issue I’ve had is that some of these less popular libraries (both by Microsoft and not) have some truly tasteless APIs, I think mostly stemming from older versions of C#, and for some reason the lowest quality stack overflow answers are much lower for C# than in python — there appears to be much more cruft and outdated information in blogs, stack overflow in C#-land than python. Really in general I feel like python/rust has a higher floor for taste than C#, but at ceiling it’s competitive.

I’m pretty sure though that startup language choice has nothing to do with practical considerations — it’s largely a popularity contest based on hype cycles, and C# is well past its hype-prime.