I use Google Photos. Apple Photos would work too. Or any of the messaging apps like WhatsApp, Telegram, etc.

These days you can unlist the video.

YOu think people know how to do that? Or even remember their content is there for all to see?

I don't think most people care to be honest. Dive into enough small accounts on instagram sharing their entire life story and you start to have a different perception on the ethical quandries.

The quandry is that people feel insignifigant and don't care if a dozen strangers see their posts.

That was possible then too, but took an extra step. Defaults are important.