I've never used linear, but just watching their example video [1] would worry me if I was a user and it's actually doing what they say it's doing.

He creates a task called "Create faster app launch", if we believe the article, it's processing that locally rather than going via the server, and then it's allocated an ID "BRO-5". That the ID is so low suggests it's just adding one to the previous issue ID, and so under heavy load, there are almost certainly going to be conflicts with other users creating tasks and getting identical IDs. Even if the system resolves this by changing one of those IDs, the system shouldn't be presenting the ID to the user until it is guaranteed unique. What if they've already pasted it into a document when the system notices the collision and renumbers it?

[1] https://media.performance.dev/posts/p_gAMR6Z7y49Fp/NZrXs70M_...

EDIT: WTH, there are some seriously bad karma people in this thread - just because I dared to have an opinion that the approach taken by this software might not be the best, my post was downvoted in less than a minute after posting! I'm sure whoever did that carefully considered my argument. If I'm wrong, explain why, don't just downvote my comment. If I'm not wrong, shame on you.