I agree in the sense that, compared to the staggering complexity of the web/mobile as an application platform, the weaknesses of languages themselves seem pretty small (possibly excepting the lack of memory safety in C/C++.) Tooling and ecosystem are also important, but if the platform isn't overly complex there's less need for tooling. I feel like hackers who just want the joy of creating something cool should stay away from the web or mobile platforms, because it's too hard to focus on the problem itself instead of platform/dependencies/deployment issues.