What’s the consequences for getting caught? Even if they do detect you messing with their install image, what are they going to do about it besides tell you to put it back? Unless they’re going to make you go for psych visits over software removal, it seems to me you may as well just try it and find out.
Digital photo frame that somebody else controls is great for the case where you are a person who can’t do tech, but you have somebody you trust do can, and you want to get a daily update delivered to your kitchen showing what all the grandkids have been getting up to.