I've felt the same about the TE coaching position. Before the 10th assistant was allowed in 2018, a lot of schools seemed to have GAs handle that spot. Even under Rhule, Satterfield was originally going to coach the group along with OC duties. I liked Rhule's approach of bringing in someone who can do what's needed at the position, but if they're going to take that spot, they better bring something extra to the table.
Another case to look at is #2ndChoice at Wisconsin. He originally brought Gino Guidugli, his 2022 OC from Cincinnati with him to be the passing game coordinator and TEs coach. He left a couple months later to take the QB coach job at Notre Dame. In turn, #2ndChoice promoted offensive analyst Nate Letton, who was his 2022 TE coach, back into the TE role. Prior to 2022, Letton was a GA for Cincinnati while Mike Denbroke, #2ndChoice's long term OC, also handled TEs. Maybe the guy is something special and was earmarked to replace a set of coaches if any of them left, but #2ndChoice missed an opportunity to bring in a known recruiter or someone with strong Wisconsin or other regional ties.