It's just continuing the process. Most of the internet these days is TikTok, Instagram, Facebook, Reddit, YouTube, etc and those are basically image + video sites at this point.
Debatable and definitely semantic - at the very least this requires putting the audio into a buffer, so a newly mallocd block of memory. Sure, it’s not a recording in a conventional sense, but it is a copy of data.
You'll be delighted to learn that this exact reasoning had, in fact, been used by the copyright industry against (illegal) movie streaming websites. If I remember correctly, this was in Germany and was, after a relatively short time, no longer accepted by the courts.
The World Cup is broadcast in many different languages with the same video feed. That’s likely one of the main reasons audio fingerprinting is better than video. You also get better idea of the target demographics language preferences and that leads to more relevant advertisements.