That's right. Also he was paid for his work on the WP realease, he marked himself as self-made post "project lead" (but "forgot" to add Jon aka dArkjON), released his work without coordination with the founders and core developers of BTX, included in BTX WP other BTC forks etc.
So he have exited scam with payment without properly completed work because of disagreements with the team and started spreading senseless FUD.