That statement seems very disrespectful toward another league. Just because Tottenham won Europa League, then you generalize that if other leagues are not as good as EPL. I think this is wrong.
I see almost all of top leagues in EU are almost equals. The only different is that some leagues may be lack of investors, and made league become not as competitive as we wanted to see.
He only cherry pick on Europa League, how about Champions League? why there's no team from strongest league enter final match?

Manchester City lost very soon in round of 16 while Arsenal and Aston Villa lost against the team who play in farmer league. Any leagues have the same chance, especially the team is rich and get a lot funding from investors.