Since we know everyone will be speaking in lol and wtf, and they are all derived from vernacular English, how is English losing influence?
I have no idea.
People all over the world who want to communicate learn English. I went to Korea, and had no problem at all because so many people know English. When I went to Mongolia, my guide had studied English in university. She gives tours to people from all over the world, always in English, and I was the first native speaker of English that she had ever encountered.
It sounds to me like that French guy is chewing on sour grapes.
Autant qu’il ne désirait autrement, il n’y a pas grande chance que le français deviendra une langue universelle. C’est un dommage car cette langue est tellement belle. (As much as he would wish otherwise, there is little chance that French will become a universal language. It is a shame, since that language is so beautiful.)