I am all for critical thought and a healthy dose of objectivity, but I think you are a bit tone deaf here. While I had reservations about drafting Tua and was very unimpressed with him last season (and early on this year), I am a Dolphins fan and have always been hoping he will succeed.
While this offense isn't amazing, you are in absolute denial if you think Tua hasn't been steadily improving. Interceptions are reduced, TD's are increasing, accuracy improving, and confidence/leadership is growing. These are very positive things, and they are being done behind a very poor OL and bottom tier running game. Throw in a weak offensive play calling staff with a conservative style, and it isn't ever going to be beautiful, but that doesn't mean Tua isn't improving. Is he top 10, certainly not, at least not yet, but fans are reacting to a win streak with building potential on a team that hasn't had a real QB since Marino. Enjoy the win streak and give the kid his due. Join me in hoping he continues to improve and patch up the holes in his game so he can actually be a real solution for the Dolphins. He is a good kid, keeps it professional and is clearly working hard and starting to win over his teammates.