Not sure, but I've not had any problem with obnoxious people recording videos in public in the past 10 years.

I think so. I'm less familiar with TikTok but livestreamers in Germany do tend to respect it and you'll find relatively few prank or "stranger filmed in subway/gym" style German content on the internet. People will also usually turn cameras off/down when going into businesses, facing windows, etc.

Culturally it definitely still works which is arguably the function of the law to begin with.