They have a product to sell, that’s why they’re saying it.

It's so obvious that it's cringe. They have a product to sell so these kind of things are all part of a larger marketing campaign in preparation for their IPO.

“For most of the history of the profession, being a software engineer meant spending most of your day grinding out syntax.”

This was not written by a software engineer.

They need press releases to hype up their IPO.

But they couldn't vibe code their own runtime?

Yes they could, it's called Claude Code.