Junker: English is losing its importance in Europe. Is it true?

Last week, the President of the European Union, Jean Claude Juncker, said English is losing its importance in Europe. He made the remark, at a meeting of European diplomats and experts in Florence, Italy. Is it true?
Junker said, “Slowly but surely, English is losing importance in Europe. The French will have elections on Sunday, and I would like them to understand what I am saying.” He then switched into French for the rest of his speech. Whilst this might have been done to please the French voters ahead of the election, it is a fair point he raises, and to debate now.