I told you!
Ok so I posted something here not too long ago saying that they won't kill Stiles because:
A. He is the most loved character on the show
B. They wanted to end this part on good terms with fans
C. He deserves a good ending
D. Everybody loves Dylan
So since I got my happy ending for the characters that I like, I decided not to watch the second part, I actually forced myself to watch this season just to see what happens with Stiles, Lydia and Scott, and now that I know I can go in peace. This season was the weakest for me, I didn't like the focus on the new characters, fight scenes were weak and too much slow mo, also didn't like Scott being so powerless this season he just didn't grow as an alpha. Best storyline was with Stiles and his parents. It was very interesting to see how the story unfolded.