The guy in the linked video up thread tore the whole computer down in 6 minutes. I'm pretty sure most people can manage to find 12 minutes out of their life every 5 years to replace the battery if they want. But if that is too arduous, you can pay Apple to do it for you for a mere $149, with the battery included in that price. Given that a comparable battery from iFixit will cost you $80-$100, that's just ~$50 to have someone save you the hassle of having to remove 18 screws from your laptop every 5 years.

Bingo. People will go lengths to find a reason to complain about things they would otherwise never be actually bothered by in their lives.