"The same is true of any other algorithmic sorting."
This is the same problem that Google creates.
Imagine if the Yellow Pages advertisements, listed categorically and alphabetically, were re-sorted according to an algorithm according to whomever was accessing them.
To use a popular term, sorting has been "weaponised".
It is a form of filtering, curation, gatekeeping. Businesses compete to pass through the filters, past the gate.
For example, when a user selects an app for her phone, she selects from a "top 10" or some such. As with being on "page one" of Google search results, manipulating the algorithm becomes a goal. Another popular term online, "winner take all" or "network effect", is in part enabled through sorting. All those hundreds of thousands of other apps are sorted out to create a "top 10" for which all must compete.
Instead of letting users sort results on their own initiative, e.g., according to popularity or rating, listings are sorted by default.
Alphabetical listings do not create the competition that drives up the value of the "top 10" or "page one". Alphabeticisation is a transparent algorithm everyone can understand, not a trade secret.
Even on HN, we see comments re-arranged in their order in a thread, in order to manipulate reader response.
There is certainly an element of utility and convenience but, in effect and perhaps by intent, there is more to the sorting than simply what may benefit the user.