Relays are just temporary storage to make sure notes get to the destination even if people are offline. They are not here to protect you or your data. Especially free ones. That's not their goal in the system.
But you recommend relays for encrypted private messaging, don't you? Isn't it mean that relays could be more or less protective for us or our data?
Amethyst should only ever connect over Tor. Anything else is endangering users. Then people should be able to deactivate For if they know what they do.
One day Tor libraries will actually work. Until then, it is what it is.