No and that's because I have had 2 - 4 horses my entire life.
They all get equal play and work time.
My heart horse knows he's my heart horse but he is also a standoffish strong alpha-dominant and it's beneath him to have a hissy fit about anything. Unless I take his BFF of 20 years out of the pasture without him. HE can leave the pasture and his BFF behind, and life is great, but don't reverse that - lol lol