They are probably reusing a component that happens to sort its entries alphabetically, since that is most commonly the expected behaviour. If the form is configured in a CMS, whoever built it might not even know it’s happening and has entered the data properly, but it gets resorted in the presentation layer. It’s also not impossible that the behaviour of the component has changed at some point and this particular case didn’t have test coverage or wasn’t actually part of the specification.
This is however not something I think we, as consumers, should necessarily celebrate. This also means that we are very likely nearing the end of the “free” web that we are used to.
No, I’m not saying that selling out one’s personal integrity is preferable, but if it turns out that advertisement as a business model effectively isn’t sustainable, we will just have to accept the reality that we will more and more commonly have to actually pay to access content and services on the web.