Because people are interested and want to find out the truth? At the moment it's a he-said-she-said situation, with each side posting their own (probably biased) version of events.
The person you're replying to is suggesting that everyone who's "interested and want to find out the truth" here should stop and re-evaluate what utility that gets them, vs what disutility that information-seeking gets the people involved.
To put this another way: the paparazzi that chased Princess Diana to her death, did so because there was demand for tabloid journalism.
The people that invested in this affair that doesn't concern them? They need a new hobby. Maybe volunteering at their local vax site for a few weeks could do some actual good instead of trying to play detective just to feel good about themselves pretending they are contributing.
To put this another way: the paparazzi that chased Princess Diana to her death, did so because there was demand for tabloid journalism.