One topic shows an error to me "appears to be either missing or off limits to you". Other three: one with 2 merits, one with 24 merits, anther with 30 merits [I hope my count is correct]. Not saying it should be an obvious indicator but those topics must have good contents hence they were merited. Let's leave it to see it from that aspect.
I haven't done anything with any of the above Ratimov's topics at this point. So another moderator is handling them.