It's not solely about syntax.

Have you tried using Make on Windows? I know, I also prefer Unix-like systems over Windows (and I barely use Windows these days anymore), but for those that need Windows support, it's a miserable experience trying to use tools that barely work there.

Checksum based (instead of timestamp based) up-to-date resolution is also nice. Etc, etc.

In short, I don't think Task is perfect (far from it), but we desperately need better alternatives to Make.