I am not talking about C# specifically but also and I agree.

Implicit and magic looks nice at first but sometimes it can be annoying. I remember the first time I tried Ruby On Rails and I was looking for a piece of config.

Yes, "convention over configuration". Namely, ungreppsble and magic.

This kind of stuff must be used with a lot of care.

I usually favor explicit and, for config, plain data (usually toml).

This can be extended to hidden or non-obvious allocations and other stuff (when I work with C++).

It is better to know what is going on when you need to and burying it in a couole of layers can make things unnecessarily difficult.