I would agree. Not sure why 8 hours of shots of Iceland with no narration is better than a TV show in daytime? Not all of it is trash, maybe they are showing classic movies. Even if it is some soap opera, at least the aunt will feel engaged with people, even if those people are characters on TV. Living alone at that age must be lonely, let her have her joys.
I've lived with an elderly that only watches variations of CSI in TV, as long as it keeps her entertained she gets to pick*
*It's still up for debate if those shows or the news are worse for making her a bit paranoid, you'd think it'd be more clear cut, but she only brings up stuff on the news, if it goes too far we will have to make some changes