You clearly didn't read my post.
18-19 was the highpoint of his career. He had career years at age 24 and 25. It's not a big surprise there. I don't think the years afterwards are indicative of a decline.
20 120 wRC+
21 114 wRC+
22 137 wRC+ (another very good year)
23 125 wRC+
24 117 wRC+
25 125 wRC+ no decline!!! He was as good in 24-25 as he was in 20-21.