I think they do refer to the boots as "The Mole's Victims", as if the Mole did something to eliminate them. The idea is that the Player failed on the Quiz so miserably because the Mole hid himself so well (while also sabotaging). So, yes, the Mole buries Players. That's the way the show is sold, so Clues would go along with that.

Now, if a Player A fools Player B into thinking A is the Mole, and B fails the Quiz because they put A for their answers, rather than the Mole, you could make a case for a Player taking out another Player. But while the show would mention such subterfuge, they'd always credit the Mole for the ultimate elimination.