I don't know about posts, but for comments I used to hold the most upvoted comment of the accumulated vores on the fediverse, and probably also the most replies. All by accident of course, and yet nevertheless, I can tell you that there are not just dozens, but thousands of people viewing this shit. Posts must be worse.

It happens and decays quite fast, so your inbox will be red for a couple of days at most. Reddit was the same but for other reasons. People actually read this in comparison, whereas on Reddit the interest would die within hours, unless someone accidentally found your post three years later through googling.