Knee jerk, probably. People see the first line and don’t bother to read the rest without carrying over the initial reaction.
Which, that’s the humor of it. You start out with a jarring intro, switch to a lighthearted part, and finish with a wink and a smile. Alas, a lot of people can’t let go of their first reaction in text like they would in person. Kinda silly, but this is the internet lol.