I'm not sure why you find that hard to understand. It was obvious from the post.

Not that I would ever let strangers stay in my place, but I would expect the same thing.

If it did, then his issue should be with: the owner suing him and the companies linking his case to the blacklist. AirBnB could help him out with place to stay, court costs, etc. - but you can't expect them to "just fix" it. They've got the guarantee and as far as I know, he got the money to compensate for the incident itself.

If it didn't, then... the blacklist works. I don't approve of how it works, but these are the current rules. Effectively the party is irrelevant - he's on the blacklist for breaking the subletting rules.

If I were to consider renting my place on AirBnB, I would consider the people staying here to be my guests, not ABnB's. While I believe there is some concern with how the company represents themselves, the fact remains that it's his apartment he chose to rent out. Illegally, I might add.

If you rented a room to someone referred by a friend, and that guest trashed your place... would you expect your friend to make restitution? (Personally, I would downgrade my trust in that friend's opinion, but I don't think I would hold them liable...)

No, I wouldn't expect a friend to make restitution at all - unless, of course, my friend had done this sort of thing millions of times, knew I was likely subjecting myself to the risk of eviction (probably completely inadvertently), and didn't bother to say a damn thing to me.

If, instead of warning me about the stupid risk I was taking, my friend highlighted things designed to make my behavior seem risk-free (like, say, a million-dollar property damage guarantee), well, then I might feel a little differently. If my friend had built a multi-billion-dollar business off of the risky behavior of me and others like me, then I know I would feel differently.

But this is a moot point, because friends don't let their friends engage in risky behavior without at least making them aware of those risks. Someone that does that isn't your friend at all.

Before your post, my best guest was that they damaged his apartment, costing him money that he couldn't recover, and when he tried to get Airbnb's help, they sent out word that he was uncooperative and got him blacklisted.

The XXX Freak Fest is not the problem, and AirBnB already compensated for that, which is why the post is not entirely obvious.

That and the... interesting writing style.

But Airbnb should have e.g. rented a hotel room for him until the situation is resolved, and they didn't do it...