As far as the cans, it's just a better way to package beer. It stays fresher longer due to less oxidation and also no light infiltration.

As far as Ballast Point in particular, I can only offer conjecture. Sculpin was great ten years ago, but the craft has moved forward and I don't feel like Ballast Point kept up. In my opinion, their recipes are dated. Whether that's due to the acquisition or not I couldn't say, but I believe that's why they've fallen out of favor.