But is there any truth to it? Is the skies of World of Warplanes plagued by auto-aiming software, or is something else at play?

Have you encountered a suspicious player? Report them through the in-game system—Wargaming does review replays manually.

Wargaming (the developer) has taken a hard stance against these. They implemented a rigorous "Fair Play Policy." While cosmetic mods are allowed, anything that alters the gameplay mechanics—specifically the aiming or "cheating" mechanics—can result in permanent bans.