I think it's "conceptually odd", but a non-issue at the same time.
For the sake of consistency you can always open a post and have a "reaction". Regardless of who wrote it. Also, it kind of incentivizes you to check your post.
But, really, it's a victimless crime. One extra up-vote is meaningless.
But... while you don't auto-heart your posts, it does with your comments. Now that's odd. 😜
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