It was a joke about the significant portion of lemmy users also being Linux users. Also that Linux users ( like myself) would be oblivious that somebody could dislike Linux or not be interested. So it is assumed that they must like Linux then and would care about things Linux users care about. With the magic of circular reasoning, you can then say that since they must obviously love Linux that they would then agree with the person and want to hear what they say.

It was a far stretch for a joke but I will stand by it.