I think it's just something we have to live with now. There are different show-runners and they clearly approach Dexter's kills very differently.It used to be that Dex was very methodical in his kills. They were very planned out, very slow developing, and very careful. It always took, at minimum, an entire episode (if not multiple episodes) for him to plan to investigate, investigate, plan the kill, and then methodically complete the kill. Things like cameras and people walking in on him were accounted for. If something wasn't going perfectly, he'd back out and try again tomorrow.That approach is totally different now. It's completely outside of what the Dexter that they originally presented to the viewers would do, but it's been consistent in that way these last few years so we have to just accept it. He's not methodical, and doesn't think of the clever ways he could get caught any more. We can go from introduction of a character to the knife being driven into their heart on the table in less than 10 minutes of screen time. In this last episode, he found out about Victor, investigated him, found him, and killed him all in about 2 hours of time in the show. He basically ad libbed it in the airport with little planning, none of his tools, and none of his precautions. The Dexter we were originally presented would never do that. Some will say it's character development (or undevelopment) but I think it's just sloppy writing. The show moves much faster now and is more akin to an action show where these kinds of things are ignored to keep things moving rather than the methodical show it was in the past where all these things were accounted for. It's certainly not alone in that devolution, as even a show like Breaking Bad has headed in that direction (with accidental kills being cleaned up in a 30 second montage rather than a 2-episode arc). It was better before, but this is the new world and I'm ok with suspending my disbelief on it if they put together a good main plotline, unlike last season.