Yes, having this big hulk that can pry his way out of a chest with low strength is...weird. But, they gave Halsin low strength in spite of having tree trunks for arms, so I'm not sure that they factor character appearance in when making stats.
I just take Minsc to camp and respec him to a Berserker, which is what he was in the originals. Yes, I know he was a ranger, but he had a special Berserk ability.
This is a terrific game, but I sometimes I wonder if any of the developers or writers played the first games.