Can you remember where this was discussed? I was under the impression that JWT was becoming a new standard for many people. I guess that's not mutually exclusive to it being bad, but I would like to read more.
Developers would like there to be one. Unfortunately, they've chosen a terrible standard --- just really, really bad --- to run with. You are better off doing something by hand than using JWT. If you're at all familiar with my ouvre on HN: that's how bad JWT is. I think you might seriously be better off DIY.