Meh. Back in the day (1980s) at DCA, we denied go-arounds probably three or four times a year. It was always because the landing pilot didn't think there was enough separation from the departure in front of him. Nothing ever came of it, but there was no such thing as Youtube back then!

In this case, fortunately, it all turned out okay, so the lesson(s) are free.

Something to consider: either the pilot didn't know reduced runway separation is allowed at towered airports, indicating a gap in his training, or... he sincerely had a preference or opspec to not participate in it. If the latter is the case, short final is much too late to advise ATC.