I will rather not comment on personal level.
But we probably fair to judge the software itself instead of the person.
We can check freely the source code of the apps. I didn't found some weird stuff or weird code in Amethyst source code. Many developers who contributes to Amethyst also didn't found any such thngs.
If there are any such weird stuff or malicious code then F-Droid maintainer also will be the first one to notice such stuff. We better judge the code itself 🙂

