Most of what you said above is a strawman. I said one specific thing.
"it's a lot harder to track down bugs for a newcomer"
This statement is FUD. You seem to be defining "language deficiency" as "hard for a noob before they become proficient". I think that is absurd.
I really don't think it's FUD to say that Rails has gotten much bigger in the past 5 years, and it's definitely not FUD to say that as codebases and tooling grows, so does barrier to entry.
The specific thing I guess you're objecting to is that it's harder for a noob to understand implicit imports and where something is coming from if you don't know much about what you're importing. If you use a tool to solve that language deficiency, that doesn't remove the deficiency from the language. By that logic, adding an IDE to Java makes it a very concise language.