Eh, I've been a .net developer for almost 15 years.

The parent post is correct that the third-party ecosystem (especially OSS) is sorely lacking in quality.

Like look at logging - logging in .net is SO anemic. Even with third-party libs, there are so many features missing that have been in java libs like slf and log4j2 for years, yet we have nothing close in .NET.

Hell, you could just pick a feature from spring and compare to what's available in .NET ecosystem, and you'll be sorely disappointed.