Did Kevin Durant never improve as a player since winning 2014 MVP?

10 years ago, I remember how a 24 year old KD at peak of his power earning his MVP after a stunning regular season campaign. He was simply outstanding as a pure 3-level scorer with a deep bag. A near 7-footer with bliztering speed/agility going to the rim was unheard of at the time.

However, KD suffered a foot injury the next season and missed tons of games. He didn't looked the same as before when coming back. KD has since never been among top 2 favorites to win an MVP again for the rest of his career

As the title says: Do you think KD actually never improved as a player since 2014?