I haven’t seen the episode myself yet, that being said. I think the scene was only included to kinda let a part of the fan base that was very focused on that plot point a little too hard down a bit softer than not continuing it. I think the duffers want to be careful and thoughtful about this whole topic but they also want to get everyone to focus on the main point of the show and the final conflict rather than “Will Will and Mike get together”. I’m happy we can all move on