Just a few days ago, AWS announced[1] that they will be contributing TLS to Redis, and judging by one of his comments[2], antirez doesn't seem to be completely against merging it.
According to a comment on Reddit[3], Josiah wasn't aware of this effort by AWS.
[1]: https://aws.amazon.com/cn/blogs/opensource/open-sourcing-enc...
[2]: https://github.com/antirez/redis/pull/4855#issuecomment-3831...
[3]: https://www.reddit.com/r/redis/comments/8f373k/a_new_redis_f...