Buxton is not nor was he EVER a 5 tool player. 1. Hit for avg. (Never)
2. Hit for power. Yes.
3. Run. Absolutely.
4. Defensively, One of the best CF of all time. When healthy. 5. Arm strength. Yes. It's above avg.
If he was able to stay healthy and played 130 or 140 games per year, there would be a healthy debate for his HOF enshrinemeInt. So if the best he can offer is the maximum number of games he can provide as DH the Twins will happily take the results of 600 ab's vs 400 he might accrue by playing both. He's averaging less than 100 games per season for his career after all. I'm not saying he should never play CF again. But I'm also not opposed to his solely dh role either. Whatever maximizes his playing time.