I think you're right that he stole your work without proper attribution. I'd suggest reporting his Reddit thread(s) if you haven't already. Or start a new thread like this HN one.
The next.js mods review his claims and said that he didn’t have any grounds for a claim because he used an open mit license.
They locked the thread and said the matter was over.
OP blew it up and tried to take it further to other subreddits, and this stupid drama even pulled in Lee Robinson from Vercel.
I am making updates to my project based off the communities feedback.
Is there anything else you can recommend?
https://www.reddit.com/r/nextjs/comments/17wujjc/my_open_sou...
I’m sorry for any miscommunications or misunderstandings, and I would be more than happy to take this offline and resolve this without continuing to pull in the development community.