>>57340354Carefully read the subtitles on the screenshot I attached here.
>Spinel: Master Gibeon held him in high regard. He was bound to get in our way eventually.Spinel's motivation isn't to get rid of Amethio because of "favoritism" nonsense (what the fuck are you talking about?), it's because Amethio being Gibeon's grandson means Amethio continues to be involved with Explorers, which presents a threat to whatever Agate/Spinel are plotting to do.
As of episode 75, Agate/Spinel are still plotting something and the dialogue explicitly points out they're keeping this a secret from Hamber. People who claim Spinel has no scheme likely suffer from the case of having average anipoketard reading comprehension.