They removed the Democratic Party personal detail on him.
If you go back to 2020 April revision:
Robert Francis Kennedy Jr. (born January 17, 1954) is an American environmental attorney, author, and opponent of vaccination. Kennedy is a son of Robert F. Kennedy and nephew of former president John F. Kennedy. He is the president of the board of Waterkeeper Alliance, a non-profit environmental group that he helped found in 1999
If you go back to 2017 October revision you get an even more neutral stance on him:
Robert Francis "Bobby" Kennedy Jr. (born January 17, 1954) is an American environmental attorney, author, activist, entrepreneur, and radio host. Kennedy serves as president of the board of Waterkeeper Alliance,[1] a non-profit environmental group which he helped found in 1999. He is the chairman of World Mercury Project (WMP),[2] an advocacy group that seeks to reduce and eliminate mercury exposure from industry and pharmaceuticals such as vaccines.
They removed the Democratic Party personal detail on him. If you go back to 2020 April revision:
If you go back to 2017 October revision you get an even more neutral stance on him:
Removing this shows they view him as a threat. Generally it's informative to see what's not said or shown - much more so than what is.