1. Kofi Kingston hasn't drawn well as WWE Champion
Perhaps the biggest and most important reason for taking the WWE Championship off Kofi is because he has failed to draw in fans. A report from Forbes suggests that Kofi is one of the worst-drawing World Champions in WWE history. After all, SmackDown Live's ratings continue to plummet, ticket sales are poor with many seats empty in house shows and fan interest is at an all-time low.
Although, Kofi cannot be blamed for the aforementioned woes. He is partly responsible, he hasn't been at his best lately. His feud with Dolph Ziggler was bland, his feud with Kevin Owens under-whelmed and he made Samoa Joe look weak at Extreme Rules and throughout their feud. Kofi struggled to maintain fan interest in the post-Mania season.
On the contrary, Orton is one of WWE's biggest draws and continues to be a huge attraction for casual fans. Unlike Kofi, Orton is a proven, valuable commodity that WWE can rely on in times of need. Hence, Orton's reliability and star-power may force WWE to take the title off Kofi at SummerSlam.