Unfortunately, once you share something online it's moved beyond anyone's control. Even if the platform respects your wishes and does everything right, there's always 3rd party web crawlers, data harvesters, archival services, etc. They are always around, busily vacuuming up everything they can on the web. Few if any shared posts or comments will ever be truly deleted. Storage of text is cheap, and a lot of entities love hoarding data.

So, try to only post stuff you wouldn't mind your parents, coworkers, friends, etc. knowing about. Corporations and governments are moving more and more towards 100% surveillance and away from privacy and anonymity. It's a giant problem, and I hate it. But the only element of this you can control is your own behavior.

Depends on what it is for me. I strongly dislike praise team / evangelical pop-rock Christian stuff. But I miss some of the older more traditional and liturgical music. Some of it is quite beautiful. Bach, etc.