On first thoughts, the biggest downside is that black can play 2... c5 and transpose into a Sicilian where white queen is misplaced on e2, offering a respectable position.
Otherwise, I don't see anything wrong with the move if you can make it work with the rest of your development.
A little while ago I made a post about how I find it difficult to play against the french defense. After many games it seems that black somehow always comes out better after the openings (with a few exceptions).
The biggest annoyance for me is all the pressure black puts on my d4 pawn. He just keeps attacking it. I need that pawn for my e5 push.
I decided not to play d4 and instead decided I would start playing a different variation, known as "Chigorin".
I wouldn't usually play a move like Qe2 before developing the light squared bishop, and I don't think I ever develop the queen before any other minor pieces for that matter. But I need to try something different because what I have been playing hasn't been working for me.
I think part of the problem with the advance variation is that there's so much more established theory on it that my opponent seems to know about it. The opening moves fast and I don't it all memorized.
So I decided to start playing the Chigorin. Are there any downsides to this variation?
https://www.chess.com/openings/French-Defense-Chigorin-Variation