My guess is they can't remove the "sale pending" tag until a certain amount of time has past or it's auto generated and they can't do anything about it. If they've gone through the trouble of taking photos and uploading them, there's a good chance it's available for purchase. However, the vehicles may sell quickly and the ads will linger.All of them show pending sale.
Speaking with multiple dealers from various brands over the last few years I've come to realize they have very little control over the content or don't have the resources to manage it in real time. It may not be a priority for them since they likely get a lot of inquiries on what's listed and those leads could turn into potential sales on other models or orders.