Definitely it's how Remix presents itself. Their landing page reads like a marketing pitch by some crazy startup looking to raise money, not like a stable library to build a product on. You have to scroll quite far to get any factual information on what differentiates it from Next.js. I quote:
> Focused on web standards and modern web app UX, you’re simply going to build better websites
I’ve used both now and it’s just fine as a framework. Maybe it’s in the way they present themselves.