I don't think so like I said earlier he's been training with Khabib and his father all his life in Dagestan.
Islam and Khabib fighting style, weight, height, reach is exactly the same and Khabib went on as undefeated retiring using his skills as a wrestler. There's no reason why Islam will not continue that we've yet to see it lose.
Everyone was dodging Islam and now they have no choice but to go through him, it does suck I am disappointed because Olivera really gave up quick I thought Olivera was a lot tougher then what he showed at UFC 280.