I would disagree, I think this answer is not focussed enough on the semantics.
For better or for worse, the "Linux" name has become synonymous with the whole OS and not just the kernel, and the person answering seems to take the assumption that this is what the person asking the question believes. While its interesting to know there's heritage from DangerOS in Android, the answer could have quite easily just been the last bit: "because the Android founders didn't want to spend time writing a new kernel from the ground up".
As a tangent, why do people say "GNU/Linux" anyway? We don't say "Windows/NT" or "macOS/Unix", and I think saying "GNU" when we mean GNU and "Linux" when we mean Linux would solve a lot of the problems with translation of assumptions when novices and experts interact.
For better or for worse, the "Linux" name has become synonymous with the whole OS and not just the kernel, and the person answering seems to take the assumption that this is what the person asking the question believes. While its interesting to know there's heritage from DangerOS in Android, the answer could have quite easily just been the last bit: "because the Android founders didn't want to spend time writing a new kernel from the ground up".
As a tangent, why do people say "GNU/Linux" anyway? We don't say "Windows/NT" or "macOS/Unix", and I think saying "GNU" when we mean GNU and "Linux" when we mean Linux would solve a lot of the problems with translation of assumptions when novices and experts interact.