No, because he clearly noticed during Baldur’s Gate that this spell wasn’t working very well. Pretty obvious actually. But it’s clearly not the case with Baldur’s Gate, he noticed it there.

I had the same problem with the board game; you could cast a spell that would do damage for a longer period of time, but the enemies could just run away. Then you would have to recast it in the new location, when in fact the game wasn’t over yet and that costs you a spell life every time. Or you had to keep your opponent in a certain spot, but if both spells were focus spells, you needed spellcasters to make that spell reasonably useful. So he changed the spell. The question is whether he would modify every other AOE spell that stayed in place, or whether he had a special reason for these specific spells.

Not to make the video game better, the video game still uses the old rules. Newer video games might benefit from that (or maybe Larian will update it), but that’s not the point. The point is that the spell was clumsy anyway, whether it was a board game or a video game.