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Back in Gen 7, PokeaimMD/Joey manipulated the UU ladder and got Ambipom to rise to the tier within one month, from no usage to being in the Top 10 due to Joey making a video on him and then other players spamming him on ladder for the memes. So Smogon changed how rises/drops work once all tiers...
Unless you're Steel/Dragon (RIP Archaludon) or Fairy/Dragon (RIP Mega Altaria) you're always weak to Dragon LOL. That's like saying Dragapult is weak to Dragon so it shouldn't rise