This is just pedantic. "Algorithm" is obviously shorthand for: a recommendations system that shows me things I didn't explicitly opt into.

Compare e.g. Mastodon vs Twitter or Bluesky. The former simply won't show you anything you didn't explicitly subscribe to, and there's no hidden ranking system.

The law is not a computer program. It is up to human interpretation. The law merely needs to define the intent, which is actually fairly easy to explain: you're not a common carrier if you're mediating and promoting and ranking and pushing beyond what the user has subscribed to with their choices.

You can get technical that "sorting" and "filtering" is a form of that, but you'd be applying the lens of a software engineer, not a lawyer.