[atoav]

In my experience "durability" is not even a metric to those typically deploying most small websites (e.g. think about the website for a small company) consider.

They just put some wordpress on some webspace, that is maintained by some hoster and call it a day. If something doesn't work the company will call them.

If people like these have problems with technology, they call people like me — I ask them why they don't just take a static site instead and they look at me sideways and ask me how they would then do a animated sliding gallery without a wordpress plugin.

They use the tech they use, because that's what worked for them so far. They don't use it because it is rationally the best choice.