Since it’s an island everything has to be transported there by ship or boat. Glass bottles are heavier than cans, therefore need more fuel to be transported, they also take up more space. When it comes to getting rid of them you can just crush the cans, melt them down and reuse the Aluminium. Obviously you can recycle glass bottles as well, so I don’t where the “can’t be recycled easily” BS in the article comes from. Also, most glass bottles are used multiple times before they get molten down and recycled. In that regard they’re actually a lot more environmentally friendly than Aluminium. But this is offset by the increased fuel consumption for transportation. In the end, it probably comes down to pretty much the same in terms of environmentally friendliness.
Obviously anything out of a glass bottle will taste definitely better than out of a can. The best example is coke. That first sip out of a glass bottle is unbeatable!