In Thundar, you have to swipe left or right on comments for upvote, donwvote, reply, etc. It's not my favorite design and I've seen it before in a few reddit apps.
Jerboa is more straight forward on it's UI design choices but it feels a bet less stylish too(which I am fine with). But the replies, upvotes and downvotes are there under the comments, easy to find and access.
This part is what really blows my mind. I guess there are some reddit influx that got confused by the "ml" domain or something?