You don't think Brailsford was involved in Wiggins' transformation from a guy who couldn't finish in the top 100 of a mountain stage and caused David Harmon to nearly have a coronary when he lasted longer than Cunego on a diesel climb two months before that 4th place? Or are you contending that it doesn't count as a transformation because it predates Team Sky?Froome is the only real shock development. He went from "lol, look at him crawling up the Santuario di San Luca" to "lol, look at him destroying everyone uphill" literally overnight.
Wiggins had already been 4th at the Tour when they signed him. Thomas had been close on GC before, but collapsed in the third week. Both of them ride uphill like the track cyclists they naturally are, it's not a joy to behold. But it's not a miracle transformation.
True, Thomas wasn't a complete scrub on the climbs until age 29 like Wiggins was, but he also wasn't somebody who was there on long climbs, let alone dropping people he could eat in one bite on them either.
And then in 2015 at age 29, suddenly he wasn't just grinding over 2-3km climbs like Malhão or riding 5% tempo grinders, but dropping guys like Quintana on HC monoliths. And that's apparently not a transformation because he won a race of four flat stages and an ITT in 2011.
If he'd won the 2018 Tour by building time in time trials and the cobbled stage early on, and then surviving the mountains like larger GT riders tended to, then I'd be more willing to accept it. But that's not what I saw. I saw him become the first person since a guy whose name is now expunged from the record to win back to back mountain top finishes at the Tour, grinding all the climbers to dust on the way. I can't unsee that. And while I don't need to believe to enjoy, I neither believe nor enjoy Thomas, and he completely strains my suspension of disbelief in a Cândido Barbosa kind of way.