You know, in the following season (2017-18) Jose got 2nd in the Premier League - ahead of Poch's Spurs, Klopp's Liverpool and Conte's Chelsea - and got to an FA Cup Final (beating Spurs on the way). Surely we should consider those results when looking at the evolution of his work there? You can't blame it all on luck. Not everything that worked at his time at United was down to luck - not to mention the other 20+ titles in his career.
You can say he was lucky in his first season there, I'd agree with it. But Poch could have been lucky too - he lost to powerful Gent before it happened. It's a cliché, but it's true: you make you own luck. Poch's Spurs lost to Gent in the exact same season Jose won the Europa League with United. The competition had the same "easy" teams Jose beat. And Spurs had a much better team than United.
Yet, it was just another trophyless season for Spurs, while, lucky or not, the fact is that Jose won two titles at United - with Fellaini, Blind, Smalling, Darmian and Valencia all in the first team. We shouldn't underestimate it; if titles were simply a matter of luck, Spurs wouldn't be without one - League Cup, FA Cup, Premier League, Champions League or Europa League title - for more than 13 years.
COYS