According to the search results, there is no clear answer to what happened to Farmer Benjamin. However, there are some details that can be gathered from the articles. Here is a summary of the information:

• Farmer Benjamin was a contestant on the 2022 season of "Farmer Wants a Wife".
• He left the show early due to an undisclosed illness.
• His grandmother passed away around the same time.
• After leaving the show, he gave a rare interview where he talked about his private life on the farm and his step into the acting industry.
• He returned home to the farm after his acting pursuits did not sit well with him.
• He found peace in farm work combined with his DJ pursuits and eventual "sheep art".
• In September 2023, he confirmed his relationship with one of the women from his season, Hannah.
• Hannah shared a video tribute to Benjamin on his birthday, which also showed his massive transformation, with the farmer appearing completely unrecognizable after getting a suave new haircut and shaving his beard.
• Details of Benjamins exact illness were not disclosed on the show, but it looks like it is something he will hopefully recover from.
• According to a close friend who spoke on the So Dramatic! podcast, Benjamin had suffered a stroke while filming due to the "immense pressure" of the show.

In summary, Farmer Benjamin left "Farmer Wants a Wife" early due to an undisclosed illness and the passing of his grandmother. He has since confirmed his relationship with one of the women from his season and undergone a significant transformation.