Yeah. Lewis won the title with a few to spare and yet Valtteri finishes the season in 5th place. Really not good that. Now all drivers will have bad seasons in their career but when you're in the most prized seat in f1 you can't afford to have THAT bad a season! He was good last season as evidenced by the fact that he saw his contract extended to his year but he's dived this year. Some really poor race craft at times as well - he's either so passive and ridiculously easy to pass or he's colliding.
He was also robbed in Baku and Russia of certain race wins and another 30+ points, which would have guaranteed him at least third. And he's been playing a supportive role to Hamilton since mid-season. The Red Bulls and Ferraris were free to race each other for far longer.
The UAE GP in Abu Dhabi is usually a lights to flag cakewalk for the polesitter, as it's one of the most difficult tracks to overtake. Unlike in Spa, I haven't seen many tweets from pundits and officials about the Halo though after Hulkenberg's crash. It stopped him getting out of a smoking car, and had him a sitting duck if it was any more serious. It's the third time a car has flipped over in the last three years.
Next season Vettel is going to have to work harder to win races with Leclerc pushing him. I think the Red Bulls will be stronger as well. As usual, they'll have to be excellent in the first half of the season and rack up the points, before Hamilton moves up the gears after the summer break again.