Nothing wrong with those motivations at all. The maintainer should be fostering new contributors who are doing all this work, who cares if they just want the label. Is the work good or not is all that matters.

And, if getting your code into the Kernel is the only way you get that label then that's a shit system, all the testing and writing solutions "contributes" to the final code, its like the 90% you don't ever see.