Well, they can't change Phil's Starting Line spiels, but the press releases and posts all say "Made up of champions and winners, this is quite literally the most competitive cast yet."
Quite literally!
Well, it's technically not wrong. They just use cheeky verbiage to make it seem one way without declaring too much.
Technically there are a fair amount of champion teams that make up the cast- the pro eaters, the x-games skiers, the basketball players, the indy racers, the lifeguards, and the debaters all have members of their team who are/were champions/winners in whichever event/competition they competed in.
Heck, even Cody won America's Favorite House Guest on Big Brother- not overall winner, but did manage to get something out of a season where they were the main target of the main house alliance (whether it was deserved or not not-withstanding)
Mix that with the level of fitness of the violinists and the spunky feel of the goat yoga ladies (both of which had to 'compete' with countless other groups/individuals in their field to gain notoriety), and much of the field has an above-average competitive feel when compared to other seasons.
I think the only outliers would be the twins (though one could argue their time in the military + their current occupation would put them in for competitive consideration), and the Ring Girls (I mean, I guess they're in close proximity to competitions on a regular basis- which can help, maybe?).
I don't think that anything they've said is technically a lie- misleading in the way they word things, maybe- but not an outright lie.
