Re: good article but
I'm firmly in the camp that says "no removeable battery, no sale", but that's not because I want to swap a flat battery for a charged one, simply that I've seen enough li-ion batteries lose capacity or fail outright over a year or so. I'd rather be able to spend £15 on a new battery than be without the phone for weeks wrangling with a supplier over whether the warranty covers the problem.
A "non-removable battery" doesn't necessarily mean that it's particularly difficult to replace the battery, it just means that it's not a two-minute job, or something you'd want to do on a plane, i.e. it's a bit more than just popping off a cover and taking the battery out. Of course, exactly how replaceable probably varies a lot from model to model, but for example with the Nexus 5, it takes about 5 minutes; few clips, few screws, and it's out.