I don't think that is an iOS vs Android thing, it's just the app design style.
On Amethyst, the notification is supposed to be a glimpse of how your content was received. There is no need to go anywhere else.
I think the idea of meaningful reactions (which doesn't exist on Damus yet) is confusing for those not used to seeing and quickly parsing so many reaction possibilities. The emojis tell you a lot: Those who agree, don't agree, are happy to see the post, or the post left them thinking more about it. We want you to look at it and go: oh cool, I got a few people to laugh at this and two others to think about it. Nice.
