I think it's great he's doing songs in French. And I think he should be doing songs in whatever language he likes. I've lived in three countries and there's a different vibe in all languages... and I become a slightly different person depending on which language I speak* (normally cause the cultures are different and hence demand different responses). I love that there can be so many diverse sides to a person, and think using and developing all of them should be encouraged. That way we all can become one happy understanding family
So I completely get why he might want to go play in French for a while. And if that's what he wants to do that's what he should do. Cause life is, as quite nicely pointed out in EMD, not infinitely long.
PS. Lonely is so lonley alone makes perfect sense...
* This is obviously not true for everybody... but it seems to be quite common at least.