I spent my covid years backing up all my dvds and blurays. Most, especially for TV, I dropped them. But for movies I kept as many as I could.
Some people will have gone for iso backups so they're implicitly captured but I just did remuxes as separate files so they're easier to use and play.
Having setup my own DIY I found that great for me, as I knew how it worked and had a lot of fun learning. When I needed an off site backup that worked out the box and was low maintenance I went with Synology