This is bog standard moderation. A repost of a topic within a year of the original submission is considered a duplicate [1].

A new submission is only warranted and allowed if there is “significant new information” - e.g., a major upgrade or announcement.

Three months ago we had another huge discussion about Bitchat in Gaza [2], which qualified due to having “significant new information”.

[1] https://news.ycombinator.com/newsfaq.html

[2] https://news.ycombinator.com/item?id=45929358