Not in the slightest. Every single Pokemon game relating to Pokemon, except Stadium 1 & 2\Puzzle League\Snap (I think?), have had no voice overs what-so-ever. The only voices in those games mentioned were during battles in Stadium 1 & 2 with the announcer and just the trainers when you had combo blocks in Puzzle League. Changing now would be the silliest and, in my 100% honest opinion, stupidest things ever to do.
I feel like if they did, a lot of people wouldn't like it. As mentioned before in a previous post, it'd be EXTREMELY awkward to have only villains and\or the protagonist speak and nobody else. Just imagine how many different voice actors would be needed for just ONE new Pokemon game or a remake? Reading it is so much funner and gives the player more imagination to just believe what a character would sound like.
But yeah, voices in the games is not a good idea at all in my opinion. I feel like if they were to do this (even though unlikely since most Nintendo games don't include voices unless they HAVE to), they should have it so you can enable\disable the voices much like you could do with the announcers in Pokemon Stadium 1 and Pokemon Stadium 2.