true, but (edit: sorry about not knowing how this shit would work)
View attachment 1969550neither of her lucario, depending on which team version the remake uses, packs an actual steel-type move to smack around a fairy with. if you come packing your own togekiss, you have fairy/flying, which trivializes garchomp's eq and weakens its dragon rush and brick break, and her spiritomb is weak to fairy moves. roserade's sludge bomb will be a bitch, but if you pick chimchar as starter then you already have your check against roserade in infernape. I might be missing something (and hopefully the remake will account for this) but unless the lucario packs a steel move then it's a non-issue. in that regard.
now, if they go raw in the diamond and pearl stuff and don't have platinum's dex expansion and thus no togekiss to use, there's still huge power azumarill, which would be water/fairy, which would typing-wise be favorable in a matchup strictly against the garchomp, but is checked easily by roserade, but if you let that happen then your iq is below the sea level.
not saying it's going to make ice types useless, because i still prefer going in with ice punch weavile because i prefer that pokemon more, but it gives more tools than there were before to beat her ace with.