No one, not even people as talented and as hard working like Alexej become World Champions “on their own”. It’s not like you go out and teach yourself triples and do your own choreography. Alexej got great tech from Majorov and Mishin and Tarasova helped him to become a wonderful and unforgetable artist on the ice (apparently he would not have managed that on his own when he was still with Mishin ) and he got a federation in his back, who paid for his practice when he was young. Do you think he might have managed to become a World Champion when being born in let’s say Malaysia? Just think where Javier Fernandez might be now, if he’d had the same kind of supportive system like Alexej in behind from childhood on?
I perceive this remark on “becoming a world champion on his own” as pretty presumptuous and ungrateful. In addition it shows lack of respect towards other athletes, even when meant to be funny. But then it’s also expression of a certain competitive mindset, which is beneficial for winning major medals. Being overappreciative of other skaters' achievements probably doesn't help in becoming a 4-time World Champion.
Actually I’d wish WTT had existed when Alexej & Plushy still competed against each other – it had been just too funny to watch both of them interacting in the K&C after the other one’s performance.