Just figured out how to block on reddit without having to interact with a user.
https://www.reddit.com/r/answers/comments/7xlcs8/how_do_i_block_a_user_on_reddit_without_having/
On a related note, it would also be nice if I could block or mute on mastodon without going to a user profile page on which I sometimes find has more hate messages.
@BurungHantu Thanks for the tip. I forgot to check those dots.