Printing hello world does not show the cost / benefit of a tracing jit that needs to be warmed up over thousands of iterations. And counter example: it takes maven 0.788s to realize I don't have a pom.xml in my PWD and fail a build. It takes meson 0.163s.
Maven versus Meson is purely about architecture, just look at Maven's design.
There is a reason I didn't say anything about that aspect of JITs that you mention, it's because it's not relevant to commands which are launched from shell scripts and then exit.
