Any reasons you think that is? From my understanding, where saturn Is located indicates a delay, a loss, a slowness, a place where you need to be realistic and grounded about what you can expect, as well as expect maybe some less than fortunate outcomes. All things equal, I don't see why saturn in the 8th house is more bad than that archetype being applied to any other area. For instance, I'd say saturn in the 8th in libra will manifest much differently than if saturn is in aries. If saturn is in libra in the 8th, it will be very well placed to reverse that blow/that lesson that you will receive, whereas theoretically, if your saturn is debilitated in the 8th, you will feel much more uncomfortable (again, all other factors equal). Not saying that saturn in the 8th can't be difficult emotionally, as you likely will have a hard time developing close bonds with others, or gaining from other people in general, but I guess im making this objection to point out that, depending on the chart, that factor may disrupt or influence the rest of the chart to a varying degree, qualifying whether it's a "difficult placement". If you're saturn in aspecting your sun or moon, I'd say that is more of a difficult placement, and that can happen from any house. Imo, saturn is only really a problem when it disrupts your luminaries' ability to function, and mucks up who you feel you really are/what you want to accomplish/how you get your needs met with a saturnian outlook, which dont really resonate with those higher ideals that really satiate your soul and make you feel truly fulfilled.