To a degree. I tend to avoid anything that's disposable or has a short life, because I don't want to fill up landfills with my crap, but that's true of everything, not just sex toys. If a toy will only work well with non-rechargeable batteries, it's going to get used a whole lot less. Same with other electronics in my life. Rechargeable is better.
But it's not a perfect world, so I won't necessarily turn my nose up at something for failing to be perfectly green.