This has more subtle implications too, the imutable nature of digital content does sometimes make it hard to contextualise it. (A tweet written 13 years ago 'looks' the same as a tweet written yesterday). So even content that is fine now can be objectionable 10-15 years later, and downright offensive a generation later as public opinions and sensibilities change. It was easy in the 90s to look down our noses at objectionable content from the 70s, as it looked 'old', but now you can quite easily watch something and forget it's 20 years old.
As more content goes digital the problem of contextualisation is only going to get worse.