Syntax is one thing, but as others have mentioned it's more than that. Libraries, tooling, IDE and perhaps also knowing the ideosyncracies and pitfalls, and how to recover from them.

I'm very comfortable in Matlab and often know immediately what's wrong when I hit those oddities. In Python it usually means I spend considerable time googling and tinkering before I even understand what I did wrong because I have far less experience... Same when I tinker with Julia.

And for some people it being a Real Programming Language may be a disadvantage actually... Typically means you need a better understanding than just type-and-run.